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89420415 = 357851623
BaseRepresentation
bin1010101010001…
…11001001111111
320020021000202020
411111013021333
5140342423130
612512331223
72134026630
oct525071177
9206230666
1089420415
1146525977
1225b43b13
13156ab1b6
14bc39887
157cb4e10
hex554727f

89420415 has 16 divisors (see below), whose sum is σ = 163511808. Its totient is φ = 40877856.

The previous prime is 89420371. The next prime is 89420423. The reversal of 89420415 is 51402498.

It is not a de Polignac number, because 89420415 - 26 = 89420351 is a prime.

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, 425707 + ... + 425916.

It is an arithmetic number, because the mean of its divisors is an integer number (10219488).

Almost surely, 289420415 is an apocalyptic number.

89420415 is a deficient number, since it is larger than the sum of its proper divisors (74091393).

89420415 is a wasteful number, since it uses less digits than its factorization.

89420415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851638.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 89420415 is about 9456.2368307906. The cubic root of 89420415 is about 447.1764189096.

The spelling of 89420415 in words is "eighty-nine million, four hundred twenty thousand, four hundred fifteen".

Divisors: 1 3 5 7 15 21 35 105 851623 2554869 4258115 5961361 12774345 17884083 29806805 89420415