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61296430 = 25132971229
BaseRepresentation
bin1110100111010…
…0111100101110
311021100011220011
43221310330232
5111142441210
610025443434
71343003536
oct351647456
9137304804
1061296430
1131666a08
121864057a
13c9120a0
1481d84c6
1555abd8a
hex3a74f2e

61296430 has 64 divisors (see below), whose sum is σ = 125193600. Its totient is φ = 21450240.

The previous prime is 61296427. The next prime is 61296439. The reversal of 61296430 is 3469216.

It is a junction number, because it is equal to n+sod(n) for n = 61296392 and 61296401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61296439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267556 + ... + 267784.

It is an arithmetic number, because the mean of its divisors is an integer number (1956150).

It is a vampire number, since it can be written as 66419230 (with its own digits).

Almost surely, 261296430 is an apocalyptic number.

61296430 is an abundant number, since it is smaller than the sum of its proper divisors (63897170).

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

61296430 is a wasteful number, since it uses less digits than its factorization.

61296430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 61296430 is about 7829.2036632087. The cubic root of 61296430 is about 394.2863362154.

The spelling of 61296430 in words is "sixty-one million, two hundred ninety-six thousand, four hundred thirty".

Divisors: 1 2 5 10 13 26 29 58 65 71 130 142 145 229 290 355 377 458 710 754 923 1145 1846 1885 2059 2290 2977 3770 4118 4615 5954 6641 9230 10295 13282 14885 16259 20590 26767 29770 32518 33205 53534 66410 81295 86333 133835 162590 172666 211367 267670 422734 431665 471511 863330 943022 1056835 2113670 2357555 4715110 6129643 12259286 30648215 61296430