61402744 has 32 divisors (see below), whose sum is σ = 128268000. Its totient is φ = 27361152.

The previous prime is 61402741. The next prime is 61402769. The reversal of 61402744 is 44720416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61402741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7164 + ... + 13195.

It is an arithmetic number, because the mean of its divisors is an integer number (4008375).

Almost surely, 2^61402744 is an apocalyptic number.

It is an amenable number.

61402744 is an abundant number, since it is smaller than the sum of its proper divisors (66865256).

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

61402744 is a wasteful number, since it uses less digits than its factorization.

61402744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20407 (or 20403 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 61402744 is about 7835.9903011681. The cubic root of 61402744 is about 394.5141577827.

The spelling of 61402744 in words is "sixty-one million, four hundred two thousand, seven hundred forty-four".