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61245388 = 2272721061
BaseRepresentation
bin1110100110100…
…0011111001100
311021020120212201
43221220133030
5111134323023
610024411244
71342401661
oct351503714
9137216781
1061245388
1131631626
1218616b24
13c8c4a99
1481c3a68
15559bbad
hex3a687cc

61245388 has 12 divisors (see below), whose sum is σ = 107331952. Its totient is φ = 30579120.

The previous prime is 61245383. The next prime is 61245391. The reversal of 61245388 is 88354216.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61245383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7623 + ... + 13438.

Almost surely, 261245388 is an apocalyptic number.

It is an amenable number.

61245388 is a deficient number, since it is larger than the sum of its proper divisors (46086564).

61245388 is a wasteful number, since it uses less digits than its factorization.

61245388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21792 (or 21790 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 61245388 is about 7825.9432658306. The cubic root of 61245388 is about 394.1768640874.

The spelling of 61245388 in words is "sixty-one million, two hundred forty-five thousand, three hundred eighty-eight".

Divisors: 1 2 4 727 1454 2908 21061 42122 84244 15311347 30622694 61245388