248921644 has 12 divisors (see below), whose sum is σ = 447386464. Its totient is φ = 121096944.

The previous prime is 248921639. The next prime is 248921657. The reversal of 248921644 is 446129842.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 248921597 and 248921606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840804 + ... + 841099.

Almost surely, 2^248921644 is an apocalyptic number.

It is an amenable number.

248921644 is a deficient number, since it is larger than the sum of its proper divisors (198464820).

248921644 is a wasteful number, since it uses less digits than its factorization.

248921644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681944 (or 1681942 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 248921644 is about 15777.2508378361. The cubic root of 248921644 is about 629.0534572229.

The spelling of 248921644 in words is "two hundred forty-eight million, nine hundred twenty-one thousand, six hundred forty-four".