20412400 has 30 divisors (see below), whose sum is σ = 49041752. Its totient is φ = 8164800.

The previous prime is 20412397. The next prime is 20412409. The reversal of 20412400 is 421402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25116 + ... + 25915.

Almost surely, 2^20412400 is an apocalyptic number.

20412400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20412400 is an abundant number, since it is smaller than the sum of its proper divisors (28629352).

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

20412400 is a wasteful number, since it uses less digits than its factorization.

20412400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51049 (or 51038 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 20412400 is about 4518.0084107934. The cubic root of 20412400 is about 273.2947926359.

Adding to 20412400 its reverse (421402), we get a palindrome (20833802).

The spelling of 20412400 in words is "twenty million, four hundred twelve thousand, four hundred".