61258988 has 24 divisors (see below), whose sum is σ = 122732064. Its totient is φ = 26208000.

The previous prime is 61258969. The next prime is 61258993. The reversal of 61258988 is 88985216.

It is a super-2 number, since 2×61258988² = 7505327221568288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18068 + ... + 21188.

It is an arithmetic number, because the mean of its divisors is an integer number (5113836).

Almost surely, 2^61258988 is an apocalyptic number.

It is an amenable number.

61258988 is an abundant number, since it is smaller than the sum of its proper divisors (61473076).

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

61258988 is a wasteful number, since it uses less digits than its factorization.

61258988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3833 (or 3831 counting only the distinct ones).

The product of its digits is 276480, while the sum is 47.

The square root of 61258988 is about 7826.8121224417. The cubic root of 61258988 is about 394.2060385759.

The spelling of 61258988 in words is "sixty-one million, two hundred fifty-eight thousand, nine hundred eighty-eight".