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89502987 = 374262047
BaseRepresentation
bin1010101010110…
…11010100001011
320020102020000110
411111123110023
5140403043422
612514205403
72134522440
oct525332413
9206366013
1089502987
1146581a12
1225b83863
1315709962
14bc5b9c7
157cce60c
hex555b50b

89502987 has 8 divisors (see below), whose sum is σ = 136385536. Its totient is φ = 51144552.

The previous prime is 89502953. The next prime is 89502991. The reversal of 89502987 is 78920598.

It is a happy number.

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

It is not a de Polignac number, because 89502987 - 218 = 89240843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89502947) 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, 2131003 + ... + 2131044.

It is an arithmetic number, because the mean of its divisors is an integer number (17048192).

Almost surely, 289502987 is an apocalyptic number.

89502987 is a deficient number, since it is larger than the sum of its proper divisors (46882549).

89502987 is a wasteful number, since it uses less digits than its factorization.

89502987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4262057.

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 89502987 is about 9460.6018307505. The cubic root of 89502987 is about 447.3140194476.

The spelling of 89502987 in words is "eighty-nine million, five hundred two thousand, nine hundred eighty-seven".

Divisors: 1 3 7 21 4262047 12786141 29834329 89502987