249697028 has 24 divisors (see below), whose sum is σ = 499750272. Its totient is φ = 106936704.

The previous prime is 249697009. The next prime is 249697043. The reversal of 249697028 is 820796942.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 56300 + ... + 60572.

It is an arithmetic number, because the mean of its divisors is an integer number (20822928).

Almost surely, 2^249697028 is an apocalyptic number.

249697028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

249697028 is an abundant number, since it is smaller than the sum of its proper divisors (250053244).

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

249697028 is a wasteful number, since it uses less digits than its factorization.

249697028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6371 (or 6369 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 249697028 is about 15801.8045804902. The cubic root of 249697028 is about 629.7059415440.

The spelling of 249697028 in words is "two hundred forty-nine million, six hundred ninety-seven thousand, twenty-eight".