24972820 has 12 divisors (see below), whose sum is σ = 52442964. Its totient is φ = 9989120.

The previous prime is 24972803. The next prime is 24972853. The reversal of 24972820 is 2827942.

It can be written as a sum of positive squares in 2 ways, for example, as 4343056 + 20629764 = 2084^2 + 4542^2 .

It is a congruent number.

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, 624301 + ... + 624340.

It is an arithmetic number, because the mean of its divisors is an integer number (4370247).

Almost surely, 2^24972820 is an apocalyptic number.

24972820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

24972820 is an abundant number, since it is smaller than the sum of its proper divisors (27470144).

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

24972820 is a wasteful number, since it uses less digits than its factorization.

24972820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248650 (or 1248648 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 24972820 is about 4997.2812608457. The cubic root of 24972820 is about 292.2957689930.

The spelling of 24972820 in words is "twenty-four million, nine hundred seventy-two thousand, eight hundred twenty".