61831028 has 24 divisors (see below), whose sum is σ = 124082112. Its totient is φ = 26409024.

The previous prime is 61830983. The next prime is 61831043. The reversal of 61831028 is 82013816.

It is a congruent number.

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, 5000 + ... + 12192.

It is an arithmetic number, because the mean of its divisors is an integer number (5170088).

Almost surely, 2^61831028 is an apocalyptic number.

It is an amenable number.

61831028 is an abundant number, since it is smaller than the sum of its proper divisors (62251084).

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

61831028 is a wasteful number, since it uses less digits than its factorization.

61831028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7511 (or 7509 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 61831028 is about 7863.2708207209. The cubic root of 61831028 is about 395.4292785323.

The spelling of 61831028 in words is "sixty-one million, eight hundred thirty-one thousand, twenty-eight".