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61290814 = 21317236029
BaseRepresentation
bin1110100111001…
…1100100111110
311021022220012011
43221303210332
5111142301224
610025401434
71342651264
oct351634476
9137286164
1061290814
1131662772
121863927a
13c90c670
1481d6434
1555aa394
hex3a7393e

61290814 has 32 divisors (see below), whose sum is σ = 109408320. Its totient is φ = 25462272.

The previous prime is 61290811. The next prime is 61290847. The reversal of 61290814 is 41809216.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61290811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7152 + ... + 13180.

It is an arithmetic number, because the mean of its divisors is an integer number (3419010).

Almost surely, 261290814 is an apocalyptic number.

61290814 is a deficient number, since it is larger than the sum of its proper divisors (48117506).

61290814 is a wasteful number, since it uses less digits than its factorization.

61290814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6084.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 61290814 is about 7828.8449978269. The cubic root of 61290814 is about 394.2742942977.

The spelling of 61290814 in words is "sixty-one million, two hundred ninety thousand, eight hundred fourteen".

Divisors: 1 2 13 17 23 26 34 46 221 299 391 442 598 782 5083 6029 10166 12058 78377 102493 138667 156754 204986 277334 1332409 1802671 2357339 2664818 3605342 4714678 30645407 61290814