20701264 has 10 divisors (see below), whose sum is σ = 40108730. Its totient is φ = 10350624.

The previous prime is 20701243. The next prime is 20701277. The reversal of 20701264 is 46210702.

It can be written as a sum of positive squares in only one way, i.e., 12816400 + 7884864 = 3580^2 + 2808^2 .

It is a congruent number.

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, 646899 + ... + 646930.

It is an arithmetic number, because the mean of its divisors is an integer number (4010873).

Almost surely, 2^20701264 is an apocalyptic number.

It is an amenable number.

20701264 is a deficient number, since it is larger than the sum of its proper divisors (19407466).

20701264 is a wasteful number, since it uses less digits than its factorization.

20701264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293837 (or 1293831 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 20701264 is about 4549.8641737968. The cubic root of 20701264 is about 274.5779266327.

Adding to 20701264 its reverse (46210702), we get a palindrome (66911966).

The spelling of 20701264 in words is "twenty million, seven hundred one thousand, two hundred sixty-four".