61256280 has 64 divisors (see below), whose sum is σ = 184335840. Its totient is φ = 16284672.

The previous prime is 61256269. The next prime is 61256303. The reversal of 61256280 is 8265216.

61256280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54282 + ... + 55398.

Almost surely, 2^61256280 is an apocalyptic number.

61256280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61256280 is an abundant number, since it is smaller than the sum of its proper divisors (123079560).

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

61256280 is a wasteful number, since it uses less digits than its factorization.

61256280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588 (or 1584 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 61256280 is about 7826.6391254484. The cubic root of 61256280 is about 394.2002297647.

The spelling of 61256280 in words is "sixty-one million, two hundred fifty-six thousand, two hundred eighty".