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77913048 = 23311328729
BaseRepresentation
bin1001010010011…
…01101111011000
312102121101121110
410221031233120
5124421204143
611421540320
71634151513
oct451155730
9172541543
1077913048
113aa86254
12221146a0
13131ac4c5
14a4c1d7a
156c90533
hex4a4dbd8

77913048 has 32 divisors (see below), whose sum is σ = 196513200. Its totient is φ = 25740288.

The previous prime is 77913041. The next prime is 77913049. The reversal of 77913048 is 84031977.

It is a junction number, because it is equal to n+sod(n) for n = 77912997 and 77913015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77913041) 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, 11653 + ... + 17076.

Almost surely, 277913048 is an apocalyptic number.

It is an amenable number.

77913048 is an abundant number, since it is smaller than the sum of its proper divisors (118600152).

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

77913048 is a wasteful number, since it uses less digits than its factorization.

77913048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28851 (or 28847 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 77913048 is about 8826.8368060138. The cubic root of 77913048 is about 427.1070415224.

The spelling of 77913048 in words is "seventy-seven million, nine hundred thirteen thousand, forty-eight".

Divisors: 1 2 3 4 6 8 12 24 113 226 339 452 678 904 1356 2712 28729 57458 86187 114916 172374 229832 344748 689496 3246377 6492754 9739131 12985508 19478262 25971016 38956524 77913048