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80373090 = 2357382729
BaseRepresentation
bin1001100101001…
…10010101100010
312121020101011010
410302212111202
5131033414330
611550401350
71664105610
oct462462542
9177211133
1080373090
1141406546
1222b00256
1313861155
14a9626b0
1570c93b0
hex4ca6562

80373090 has 32 divisors (see below), whose sum is σ = 220452480. Its totient is φ = 18370944.

The previous prime is 80373037. The next prime is 80373091. The reversal of 80373090 is 9037308.

It is a super-2 number, since 2×803730902 = 12919667192296200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80373091) 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, 191155 + ... + 191574.

It is an arithmetic number, because the mean of its divisors is an integer number (6889140).

Almost surely, 280373090 is an apocalyptic number.

80373090 is an abundant number, since it is smaller than the sum of its proper divisors (140079390).

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

80373090 is a wasteful number, since it uses less digits than its factorization.

80373090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382746.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 80373090 is about 8965.1040150129. The cubic root of 80373090 is about 431.5557311133. Note that the first 3 decimals are identical.

The spelling of 80373090 in words is "eighty million, three hundred seventy-three thousand, ninety".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 382729 765458 1148187 1913645 2296374 2679103 3827290 5358206 5740935 8037309 11481870 13395515 16074618 26791030 40186545 80373090