61257828 has 24 divisors (see below), whose sum is σ = 144411232. Its totient is φ = 20208384.

The previous prime is 61257811. The next prime is 61257869. The reversal of 61257828 is 82875216.

61257828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 25150 + ... + 27477.

Almost surely, 2^61257828 is an apocalyptic number.

It is an amenable number.

61257828 is an abundant number, since it is smaller than the sum of its proper divisors (83153404).

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

61257828 is a wasteful number, since it uses less digits than its factorization.

61257828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52731 (or 52729 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 61257828 is about 7826.7380178463. The cubic root of 61257828 is about 394.2035503321.

The spelling of 61257828 in words is "sixty-one million, two hundred fifty-seven thousand, eight hundred twenty-eight".