20629404 has 30 divisors (see below), whose sum is σ = 53930184. Its totient is φ = 6876360.

The previous prime is 20629391. The next prime is 20629417. The reversal of 20629404 is 40492602.

It is an interprime number because it is at equal distance from previous prime (20629391) and next prime (20629417).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31512 + ... + 32159.

Almost surely, 2^20629404 is an apocalyptic number.

It is an amenable number.

20629404 is an abundant number, since it is smaller than the sum of its proper divisors (33300780).

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

20629404 is a wasteful number, since it uses less digits than its factorization.

20629404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63687 (or 63676 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20629404 is about 4541.9603697082. The cubic root of 20629404 is about 274.2598454956.

The spelling of 20629404 in words is "twenty million, six hundred twenty-nine thousand, four hundred four".