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42878022 = 231119311103
BaseRepresentation
bin1010001110010…
…0010001000110
32222200102120220
42203210101012
541434044042
64131005210
71030312545
oct243442106
988612526
1042878022
1122226990
1212439806
138b63815
1459a215c
153b6e8ec
hex28e4446

42878022 has 64 divisors (see below), whose sum is σ = 101744640. Its totient is φ = 11901600.

The previous prime is 42878021. The next prime is 42878023. The reversal of 42878022 is 22087824.

It is an interprime number because it is at equal distance from previous prime (42878021) and next prime (42878023).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42878021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38323 + ... + 39425.

It is an arithmetic number, because the mean of its divisors is an integer number (1589760).

Almost surely, 242878022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42878022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50872320).

42878022 is an abundant number, since it is smaller than the sum of its proper divisors (58866618).

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

42878022 is a wasteful number, since it uses less digits than its factorization.

42878022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169.

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 42878022 is about 6548.1311837806. The cubic root of 42878022 is about 350.0082229361.

The spelling of 42878022 in words is "forty-two million, eight hundred seventy-eight thousand, twenty-two".

Divisors: 1 2 3 6 11 19 22 31 33 38 57 62 66 93 114 186 209 341 418 589 627 682 1023 1103 1178 1254 1767 2046 2206 3309 3534 6479 6618 12133 12958 19437 20957 24266 34193 36399 38874 41914 62871 68386 72798 102579 125742 205158 230527 376123 461054 649667 691581 752246 1128369 1299334 1383162 1949001 2256738 3898002 7146337 14292674 21439011 42878022