249274628 has 12 divisors (see below), whose sum is σ = 436407132. Its totient is φ = 124586880.

The previous prime is 249274591. The next prime is 249274631. The reversal of 249274628 is 826472942.

It can be written as a sum of positive squares in 2 ways, for example, as 20720704 + 228553924 = 4552^2 + 15118^2 .

It is a super-4 number, since 4×249274628⁴ (a number of 35 digits) contains 4444 as substring.

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 3 ways as a sum of consecutive naturals, for example, 113 + ... + 22328.

It is an arithmetic number, because the mean of its divisors is an integer number (36367261).

Almost surely, 2^249274628 is an apocalyptic number.

It is an amenable number.

249274628 is a deficient number, since it is larger than the sum of its proper divisors (187132504).

249274628 is a wasteful number, since it uses less digits than its factorization.

249274628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25222 (or 25220 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The square root of 249274628 is about 15788.4333611666. The cubic root of 249274628 is about 629.3506604272.

The spelling of 249274628 in words is "two hundred forty-nine million, two hundred seventy-four thousand, six hundred twenty-eight".