20261372 has 36 divisors (see below), whose sum is σ = 38776920. Its totient is φ = 9237312.

The previous prime is 20261363. The next prime is 20261407. The reversal of 20261372 is 27316202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63758 + ... + 64074.

Almost surely, 2^20261372 is an apocalyptic number.

It is an amenable number.

20261372 is a deficient number, since it is larger than the sum of its proper divisors (18515548).

20261372 is a wasteful number, since it uses less digits than its factorization.

20261372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 367 counting only the distinct ones).

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

The square root of 20261372 is about 4501.2633782084. The cubic root of 20261372 is about 272.6191023282.

Adding to 20261372 its reverse (27316202), we get a palindrome (47577574).

The spelling of 20261372 in words is "twenty million, two hundred sixty-one thousand, three hundred seventy-two".