24774990 has 32 divisors (see below), whose sum is σ = 61512480. Its totient is φ = 6378624.

The previous prime is 24774989. The next prime is 24774991. The reversal of 24774990 is 9947742.

It is an interprime number because it is at equal distance from previous prime (24774989) and next prime (24774991).

It is a super-2 number, since 2×24774990² = 1227600259000200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24774991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13369 + ... + 15108.

It is an arithmetic number, because the mean of its divisors is an integer number (1922265).

Almost surely, 2^24774990 is an apocalyptic number.

24774990 is an abundant number, since it is smaller than the sum of its proper divisors (36737490).

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

24774990 is a wasteful number, since it uses less digits than its factorization.

24774990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28516.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 24774990 is about 4977.4481413672. The cubic root of 24774990 is about 291.5218844237.

The spelling of 24774990 in words is "twenty-four million, seven hundred seventy-four thousand, nine hundred ninety".