61307392 has 40 divisors (see below), whose sum is σ = 126749700. Its totient is φ = 29589504.

The previous prime is 61307381. The next prime is 61307437. The reversal of 61307392 is 29370316.

It can be written as a sum of positive squares in 2 ways, for example, as 61214976 + 92416 = 7824^2 + 304^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12784 + ... + 16912.

Almost surely, 2^61307392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61307392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63374850).

61307392 is an abundant number, since it is smaller than the sum of its proper divisors (65442308).

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

61307392 is an equidigital number, since it uses as much as digits as its factorization.

61307392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4176 (or 4160 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 61307392 is about 7829.9037031116. The cubic root of 61307392 is about 394.3098389936.

The spelling of 61307392 in words is "sixty-one million, three hundred seven thousand, three hundred ninety-two".