24970640 has 80 divisors (see below), whose sum is σ = 62246016. Its totient is φ = 9292800.

The previous prime is 24970619. The next prime is 24970651. The reversal of 24970640 is 4607942.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 24970597 and 24970606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75275 + ... + 75605.

Almost surely, 2^24970640 is an apocalyptic number.

24970640 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 24970640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31123008).

24970640 is an abundant number, since it is smaller than the sum of its proper divisors (37275376).

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

24970640 is a wasteful number, since it uses less digits than its factorization.

24970640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 24970640 is about 4997.0631374839. The cubic root of 24970640 is about 292.2872634349.

The spelling of 24970640 in words is "twenty-four million, nine hundred seventy thousand, six hundred forty".