20238536 has 32 divisors (see below), whose sum is σ = 39705600. Its totient is φ = 9659520.

The previous prime is 20238523. The next prime is 20238541. The reversal of 20238536 is 63583202.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20238499 and 20238508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19076 + ... + 20108.

It is an arithmetic number, because the mean of its divisors is an integer number (1240800).

Almost surely, 2^20238536 is an apocalyptic number.

It is an amenable number.

20238536 is a deficient number, since it is larger than the sum of its proper divisors (19467064).

20238536 is a wasteful number, since it uses less digits than its factorization.

20238536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 20238536 is about 4498.7260418923. The cubic root of 20238536 is about 272.5166434859.

The spelling of 20238536 in words is "twenty million, two hundred thirty-eight thousand, five hundred thirty-six".