20629264 has 10 divisors (see below), whose sum is σ = 39969230. Its totient is φ = 10314624.

The previous prime is 20629253. The next prime is 20629277. The reversal of 20629264 is 46292602.

It can be written as a sum of positive squares in only one way, i.e., 14379264 + 6250000 = 3792^2 + 2500^2 .

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 as a sum of consecutive naturals, namely, 644649 + ... + 644680.

It is an arithmetic number, because the mean of its divisors is an integer number (3996923).

Almost surely, 2^20629264 is an apocalyptic number.

It is an amenable number.

20629264 is a deficient number, since it is larger than the sum of its proper divisors (19339966).

20629264 is a wasteful number, since it uses less digits than its factorization.

20629264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289337 (or 1289331 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 20629264 is about 4541.9449578347. The cubic root of 20629264 is about 274.2592250791.

The spelling of 20629264 in words is "twenty million, six hundred twenty-nine thousand, two hundred sixty-four".