61492992 has 144 divisors (see below), whose sum is σ = 185431680. Its totient is φ = 17920000.

The previous prime is 61492979. The next prime is 61492993. The reversal of 61492992 is 29929416.

It is a super-2 number, since 2×61492992² = 7562776130224128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61492993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244867 + ... + 245117.

It is an arithmetic number, because the mean of its divisors is an integer number (1287720).

Almost surely, 2^61492992 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 61492992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92715840).

61492992 is an abundant number, since it is smaller than the sum of its proper divisors (123938688).

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

61492992 is a wasteful number, since it uses less digits than its factorization.

61492992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 296 counting only the distinct ones).

The product of its digits is 69984, while the sum is 42.

The square root of 61492992 is about 7841.7467441891. The cubic root of 61492992 is about 394.7073450483.

The spelling of 61492992 in words is "sixty-one million, four hundred ninety-two thousand, nine hundred ninety-two".