20378412 has 48 divisors (see below), whose sum is σ = 55619200. Its totient is φ = 6434640.

The previous prime is 20378399. The next prime is 20378417. The reversal of 20378412 is 21487302.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20378417) 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, 2914 + ... + 7017.

Almost surely, 2^20378412 is an apocalyptic number.

It is an amenable number.

20378412 is an abundant number, since it is smaller than the sum of its proper divisors (35240788).

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

20378412 is a wasteful number, since it uses less digits than its factorization.

20378412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9963 (or 9955 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20378412 is about 4514.2454519000. The cubic root of 20378412 is about 273.1430237169.

The spelling of 20378412 in words is "twenty million, three hundred seventy-eight thousand, four hundred twelve".