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72898487904 = 25311532116173
BaseRepresentation
bin100001111100100010…
…1101010011001100000
320222011102100212210110
41003321011222121200
52143244003103104
653253351331320
75160330631464
oct1037105523140
9228142325713
1072898487904
1128a09328a20
1212165680b40
136b49aa9058
1437579564a4
151d69d01e89
hex10f916a660

72898487904 has 192 divisors, whose sum is σ = 213736174848. Its totient is φ = 21567436800.

The previous prime is 72898487897. The next prime is 72898487923. The reversal of 72898487904 is 40978489827.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11806162 + ... + 11812334.

It is an arithmetic number, because the mean of its divisors is an integer number (1113209244).

Almost surely, 272898487904 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 72898487904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106868087424).

72898487904 is an abundant number, since it is smaller than the sum of its proper divisors (140837686944).

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

72898487904 is a wasteful number, since it uses less digits than its factorization.

72898487904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6461 (or 6453 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 66.

The spelling of 72898487904 in words is "seventy-two billion, eight hundred ninety-eight million, four hundred eighty-seven thousand, nine hundred four".