20700536 has 8 divisors (see below), whose sum is σ = 38813520. Its totient is φ = 10350264.

The previous prime is 20700523. The next prime is 20700551. The reversal of 20700536 is 63500702.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1293776 + ... + 1293791.

It is an arithmetic number, because the mean of its divisors is an integer number (4851690).

Almost surely, 2^20700536 is an apocalyptic number.

It is an amenable number.

20700536 is a deficient number, since it is larger than the sum of its proper divisors (18112984).

20700536 is a wasteful number, since it uses less digits than its factorization.

20700536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587573 (or 2587569 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 20700536 is about 4549.7841707052. The cubic root of 20700536 is about 274.5747079070.

The spelling of 20700536 in words is "twenty million, seven hundred thousand, five hundred thirty-six".