24998220 has 120 divisors (see below), whose sum is σ = 84523824. Its totient is φ = 6148224.

The previous prime is 24998191. The next prime is 24998249. The reversal of 24998220 is 2289942.

It is an interprime number because it is at equal distance from previous prime (24998191) and next prime (24998249).

It is a super-2 number, since 2×24998220² = 1249822006336800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 20467 + ... + 21653.

Almost surely, 2^24998220 is an apocalyptic number.

24998220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 24998220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42261912).

24998220 is an abundant number, since it is smaller than the sum of its proper divisors (59525604).

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

24998220 is a wasteful number, since it uses less digits than its factorization.

24998220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221 (or 1210 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 24998220 is about 4999.8219968315. The cubic root of 24998220 is about 292.3948339878.

The spelling of 24998220 in words is "twenty-four million, nine hundred ninety-eight thousand, two hundred twenty".