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90952887431 = 770051185483
BaseRepresentation
bin101010010110100110…
…1101110110010000111
322200202122220101221102
41110231031232302013
52442232414344211
6105441100010315
76366616534010
oct1245515566207
9280678811842
1090952887431
113563359656a
1215763b3099b
1387663753b3
14458b6a4007
152574d53a3b
hex152d36ec87

90952887431 has 8 divisors (see below), whose sum is σ = 103948201344. Its totient is φ = 77958084600.

The previous prime is 90952887397. The next prime is 90952887437. The reversal of 90952887431 is 13478825909.

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

It is a cyclic number.

It is not a de Polignac number, because 90952887431 - 210 = 90952886407 is a prime.

It is a super-2 number, since 2×909528874312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90952887437) 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, 397616 + ... + 583098.

It is an arithmetic number, because the mean of its divisors is an integer number (12993525168).

Almost surely, 290952887431 is an apocalyptic number.

90952887431 is a deficient number, since it is larger than the sum of its proper divisors (12995313913).

90952887431 is a wasteful number, since it uses less digits than its factorization.

90952887431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255541.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 90952887431 in words is "ninety billion, nine hundred fifty-two million, eight hundred eighty-seven thousand, four hundred thirty-one".

Divisors: 1 7 70051 185483 490357 1298381 12993269633 90952887431