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87949707 = 359496891
BaseRepresentation
bin1010011111000…
…00000110001011
320010111022022120
411033200012023
5140003342312
612421022323
72115363066
oct517400613
9203438276
1087949707
1145710a0a
12255549a3
13152b4961
14b9758dd
157ac428c
hex53e018b

87949707 has 8 divisors (see below), whose sum is σ = 119254080. Its totient is φ = 57639240.

The previous prime is 87949691. The next prime is 87949709. The reversal of 87949707 is 70794978.

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

It is not a de Polignac number, because 87949707 - 24 = 87949691 is a prime.

It is a super-2 number, since 2×879497072 = 15470301922771698, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87949707.

It is not an unprimeable number, because it can be changed into a prime (87949709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248269 + ... + 248622.

It is an arithmetic number, because the mean of its divisors is an integer number (14906760).

Almost surely, 287949707 is an apocalyptic number.

87949707 is a deficient number, since it is larger than the sum of its proper divisors (31304373).

87949707 is a wasteful number, since it uses less digits than its factorization.

87949707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496953.

The product of its (nonzero) digits is 889056, while the sum is 51.

The square root of 87949707 is about 9378.1505106284. The cubic root of 87949707 is about 444.7112666401.

The spelling of 87949707 in words is "eighty-seven million, nine hundred forty-nine thousand, seven hundred seven".

Divisors: 1 3 59 177 496891 1490673 29316569 87949707