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920053287 = 32711439833
BaseRepresentation
bin110110110101101…
…110011000100111
32101010020112211200
4312311232120213
53341013201122
6231143533543
731541216046
oct6665563047
92333215750
10920053287
1143238971a
1221815a2b3
131187c813a
148a29a55d
1555b8d5ac
hex36d6e627

920053287 has 12 divisors (see below), whose sum is σ = 1347684624. Its totient is φ = 604729440.

The previous prime is 920053259. The next prime is 920053297. The reversal of 920053287 is 782350029.

It is a happy number.

It is not a de Polignac number, because 920053287 - 28 = 920053031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920053297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 719278 + ... + 720555.

It is an arithmetic number, because the mean of its divisors is an integer number (112307052).

Almost surely, 2920053287 is an apocalyptic number.

920053287 is a deficient number, since it is larger than the sum of its proper divisors (427631337).

920053287 is a wasteful number, since it uses less digits than its factorization.

920053287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439910 (or 1439907 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 920053287 is about 30332.3801736692. The cubic root of 920053287 is about 972.6076035160.

The spelling of 920053287 in words is "nine hundred twenty million, fifty-three thousand, two hundred eighty-seven".

Divisors: 1 3 9 71 213 639 1439833 4319499 12958497 102228143 306684429 920053287