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88129801 = 107823643
BaseRepresentation
bin1010100000011…
…00000100001001
320010211110100201
411100030010021
5140030123201
612424532201
72120043124
oct520140411
9203743321
1088129801
1145824251
1225621061
1315348916
14b9c13bb
157b0c801
hex540c109

88129801 has 4 divisors (see below), whose sum is σ = 88953552. Its totient is φ = 87306052.

The previous prime is 88129777. The next prime is 88129837. The reversal of 88129801 is 10892188.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 88129801 - 221 = 86032649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88129861) 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, 411715 + ... + 411928.

It is an arithmetic number, because the mean of its divisors is an integer number (22238388).

Almost surely, 288129801 is an apocalyptic number.

It is an amenable number.

88129801 is a deficient number, since it is larger than the sum of its proper divisors (823751).

88129801 is a wasteful number, since it uses less digits than its factorization.

88129801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823750.

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 88129801 is about 9387.7473868868. The cubic root of 88129801 is about 445.0146037374.

The spelling of 88129801 in words is "eighty-eight million, one hundred twenty-nine thousand, eight hundred one".

Divisors: 1 107 823643 88129801