45139740 has 48 divisors (see below), whose sum is σ = 129088512. Its totient is φ = 11780416.

The previous prime is 45139739. The next prime is 45139781. The reversal of 45139740 is 4793154.

It is a super-2 number, since 2×45139740² = 4075192254535200, 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, 5184 + ... + 10823.

It is an arithmetic number, because the mean of its divisors is an integer number (2689344).

Almost surely, 2^45139740 is an apocalyptic number.

It is an amenable number.

45139740 is an abundant number, since it is smaller than the sum of its proper divisors (83948772).

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

45139740 is a wasteful number, since it uses less digits than its factorization.

45139740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16066 (or 16064 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 45139740 is about 6718.6114636880. The cubic root of 45139740 is about 356.0571279781.

The spelling of 45139740 in words is "forty-five million, one hundred thirty-nine thousand, seven hundred forty".