20613272 has 16 divisors (see below), whose sum is σ = 38815200. Its totient is φ = 10262560.

The previous prime is 20613269. The next prime is 20613301. The reversal of 20613272 is 27231602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3479 + ... + 7302.

It is an arithmetic number, because the mean of its divisors is an integer number (2425950).

Almost surely, 2^20613272 is an apocalyptic number.

It is an amenable number.

20613272 is a deficient number, since it is larger than the sum of its proper divisors (18201928).

20613272 is a wasteful number, since it uses less digits than its factorization.

20613272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11026 (or 11022 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 20613272 is about 4540.1841372350. The cubic root of 20613272 is about 274.1883373124.

Adding to 20613272 its reverse (27231602), we get a palindrome (47844874).

The spelling of 20613272 in words is "twenty million, six hundred thirteen thousand, two hundred seventy-two".