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87430494 = 2373433461
BaseRepresentation
bin1010011011000…
…01010101011110
320002111221002110
411031201111132
5134340233434
612401534450
72111101254
oct515412536
9202457073
1087430494
1145396908
1225344426
1315162528
14b87c5d4
157a204e9
hex536155e

87430494 has 32 divisors (see below), whose sum is σ = 178051104. Its totient is φ = 28615680.

The previous prime is 87430489. The next prime is 87430513. The reversal of 87430494 is 49403478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189424 + ... + 189884.

It is an arithmetic number, because the mean of its divisors is an integer number (5564097).

Almost surely, 287430494 is an apocalyptic number.

87430494 is an abundant number, since it is smaller than the sum of its proper divisors (90620610).

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

87430494 is a wasteful number, since it uses less digits than its factorization.

87430494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 87430494 is about 9350.4274768590. The cubic root of 87430494 is about 443.8344180068.

The spelling of 87430494 in words is "eighty-seven million, four hundred thirty thousand, four hundred ninety-four".

Divisors: 1 2 3 6 73 146 219 433 438 461 866 922 1299 1383 2598 2766 31609 33653 63218 67306 94827 100959 189654 199613 201918 399226 598839 1197678 14571749 29143498 43715247 87430494