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61393038 = 2376721817
BaseRepresentation
bin1110101000110…
…0100010001110
311021112002102020
43222030202032
5111204034123
610031511010
71343555310
oct352144216
9137462366
1061393038
1131722553
1218688466
13c947055
1482217b0
1555ca7e3
hex3a8c88e

61393038 has 32 divisors (see below), whose sum is σ = 142427904. Its totient is φ = 17278272.

The previous prime is 61393021. The next prime is 61393043. The reversal of 61393038 is 83039316.

It is a super-2 number, since 2×613930382 = 7538210229738888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8095 + ... + 13722.

It is an arithmetic number, because the mean of its divisors is an integer number (4450872).

Almost surely, 261393038 is an apocalyptic number.

61393038 is an abundant number, since it is smaller than the sum of its proper divisors (81034866).

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

61393038 is a wasteful number, since it uses less digits than its factorization.

61393038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21896.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 61393038 is about 7835.3709548432. The cubic root of 61393038 is about 394.4933695901.

The spelling of 61393038 in words is "sixty-one million, three hundred ninety-three thousand, thirty-eight".

Divisors: 1 2 3 6 7 14 21 42 67 134 201 402 469 938 1407 2814 21817 43634 65451 130902 152719 305438 458157 916314 1461739 2923478 4385217 8770434 10232173 20464346 30696519 61393038