20129264 has 10 divisors (see below), whose sum is σ = 39000480. Its totient is φ = 10064624.

The previous prime is 20129257. The next prime is 20129267. The reversal of 20129264 is 46292102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20129267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629024 + ... + 629055.

It is an arithmetic number, because the mean of its divisors is an integer number (3900048).

Almost surely, 2^20129264 is an apocalyptic number.

It is an amenable number.

20129264 is a deficient number, since it is larger than the sum of its proper divisors (18871216).

20129264 is a wasteful number, since it uses less digits than its factorization.

20129264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258087 (or 1258081 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20129264 is about 4486.5648329206. The cubic root of 20129264 is about 272.0253004147.

The spelling of 20129264 in words is "twenty million, one hundred twenty-nine thousand, two hundred sixty-four".