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670042488 = 233174633547
BaseRepresentation
bin100111111100000…
…000100101111000
31201200210200111110
4213330000211320
52333012324423
6150253200320
722414160433
oct4774004570
91650720443
10670042488
11314248925
121684900a0
13a8a8085b
1464dba81a
153dc56193
hex27f00978

670042488 has 64 divisors (see below), whose sum is σ = 1777973760. Its totient is φ = 209696256.

The previous prime is 670042487. The next prime is 670042489. The reversal of 670042488 is 884240076.

It is an interprime number because it is at equal distance from previous prime (670042487) and next prime (670042489).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670042487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187131 + ... + 190677.

It is an arithmetic number, because the mean of its divisors is an integer number (27780840).

Almost surely, 2670042488 is an apocalyptic number.

670042488 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670042488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (888986880).

670042488 is an abundant number, since it is smaller than the sum of its proper divisors (1107931272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670042488 is a wasteful number, since it uses less digits than its factorization.

670042488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4036 (or 4032 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 670042488 is about 25885.1789254005. The cubic root of 670042488 is about 875.0525086312.

The spelling of 670042488 in words is "six hundred seventy million, forty-two thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 17 24 34 51 68 102 136 204 408 463 926 1389 1852 2778 3547 3704 5556 7094 7871 10641 11112 14188 15742 21282 23613 28376 31484 42564 47226 60299 62968 85128 94452 120598 180897 188904 241196 361794 482392 723588 1447176 1642261 3284522 4926783 6569044 9853566 13138088 19707132 27918437 39414264 55836874 83755311 111673748 167510622 223347496 335021244 670042488