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90965408 = 2531107857
BaseRepresentation
bin1010110110000…
…00010110100000
320100011112002012
411123000112200
5141241343113
613005412052
72153123162
oct533002640
9210145065
1090965408
1147390726
122656a028
1315acc4b1
14c11c932
157ebcaa8
hex56c05a0

90965408 has 48 divisors (see below), whose sum is σ = 186810624. Its totient is φ = 43553280.

The previous prime is 90965389. The next prime is 90965411. The reversal of 90965408 is 80456909.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105716 + ... + 106572.

It is an arithmetic number, because the mean of its divisors is an integer number (3891888).

Almost surely, 290965408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90965408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93405312).

90965408 is an abundant number, since it is smaller than the sum of its proper divisors (95845216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90965408 is a wasteful number, since it uses less digits than its factorization.

90965408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005 (or 997 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 90965408 is about 9537.5787283776. The cubic root of 90965408 is about 449.7371436082.

The spelling of 90965408 in words is "ninety million, nine hundred sixty-five thousand, four hundred eight".

Divisors: 1 2 4 8 16 31 32 62 107 124 214 248 428 496 856 857 992 1712 1714 3317 3424 3428 6634 6856 13268 13712 26536 26567 27424 53072 53134 91699 106144 106268 183398 212536 366796 425072 733592 850144 1467184 2842669 2934368 5685338 11370676 22741352 45482704 90965408