20750408 has 32 divisors (see below), whose sum is σ = 45903360. Its totient is φ = 8605440.

The previous prime is 20750407. The next prime is 20750417. The reversal of 20750408 is 80405702.

It is not an unprimeable number, because it can be changed into a prime (20750407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4241 + ... + 7712.

It is an arithmetic number, because the mean of its divisors is an integer number (1434480).

Almost surely, 2^20750408 is an apocalyptic number.

20750408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20750408 is an abundant number, since it is smaller than the sum of its proper divisors (25152952).

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

20750408 is a wasteful number, since it uses less digits than its factorization.

20750408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11997 (or 11993 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 20750408 is about 4555.2615731701. The cubic root of 20750408 is about 274.7950340474.

The spelling of 20750408 in words is "twenty million, seven hundred fifty thousand, four hundred eight".