249403028 has 24 divisors (see below), whose sum is σ = 501699072. Its totient is φ = 106267104.

The previous prime is 249403019. The next prime is 249403031. The reversal of 249403028 is 820304942.

It is a junction number, because it is equal to n+sod(n) for n = 249402985 and 249403003.

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, 20900 + ... + 30587.

It is an arithmetic number, because the mean of its divisors is an integer number (20904128).

Almost surely, 2^249403028 is an apocalyptic number.

249403028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

249403028 is an abundant number, since it is smaller than the sum of its proper divisors (252296044).

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

249403028 is a wasteful number, since it uses less digits than its factorization.

249403028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51671 (or 51669 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 249403028 is about 15792.4991055881. The cubic root of 249403028 is about 629.4587002422.

The spelling of 249403028 in words is "two hundred forty-nine million, four hundred three thousand, twenty-eight".