20629004 has 12 divisors (see below), whose sum is σ = 39382728. Its totient is φ = 9376800.

The previous prime is 20628983. The next prime is 20629019. The reversal of 20629004 is 40092602.

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 3 ways as a sum of consecutive naturals, for example, 234377 + ... + 234464.

It is an arithmetic number, because the mean of its divisors is an integer number (3281894).

Almost surely, 2^20629004 is an apocalyptic number.

It is an amenable number.

20629004 is a deficient number, since it is larger than the sum of its proper divisors (18753724).

20629004 is a wasteful number, since it uses less digits than its factorization.

20629004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468856 (or 468854 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 20629004 is about 4541.9163356451. The cubic root of 20629004 is about 274.2580728697.

The spelling of 20629004 in words is "twenty million, six hundred twenty-nine thousand, four".