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87430370 = 258743037
BaseRepresentation
bin1010011011000…
…01010011100010
320002111220220212
411031201103202
5134340232440
612401534122
72111101016
oct515412342
9202456825
1087430370
1145396805
1225344342
1315162461
14b87c546
157a20465
hex53614e2

87430370 has 8 divisors (see below), whose sum is σ = 157374684. Its totient is φ = 34972144.

The previous prime is 87430367. The next prime is 87430379. The reversal of 87430370 is 7303478.

It can be written as a sum of positive squares in 2 ways, for example, as 87403801 + 26569 = 9349^2 + 163^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (87430379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4371509 + ... + 4371528.

Almost surely, 287430370 is an apocalyptic number.

87430370 is a deficient number, since it is larger than the sum of its proper divisors (69944314).

87430370 is a wasteful number, since it uses less digits than its factorization.

87430370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8743044.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 87430370 is about 9350.4208461438. The cubic root of 87430370 is about 443.8342081811.

The spelling of 87430370 in words is "eighty-seven million, four hundred thirty thousand, three hundred seventy".

Divisors: 1 2 5 10 8743037 17486074 43715185 87430370