20242536 has 32 divisors (see below), whose sum is σ = 50725440. Its totient is φ = 6731648.

The previous prime is 20242511. The next prime is 20242549. The reversal of 20242536 is 63524202.

It is a super-2 number, since 2×20242536² = 819520527422592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 14125 + ... + 15491.

It is an arithmetic number, because the mean of its divisors is an integer number (1585170).

Almost surely, 2^20242536 is an apocalyptic number.

It is an amenable number.

20242536 is an abundant number, since it is smaller than the sum of its proper divisors (30482904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20242536 is a wasteful number, since it uses less digits than its factorization.

20242536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993 (or 1989 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 20242536 is about 4499.1705902310. The cubic root of 20242536 is about 272.5345959499.

Adding to 20242536 its reverse (63524202), we get a palindrome (83766738).

It can be divided in two parts, 2024 and 2536, that added together give a triangular number (4560 = T₉₅).

The spelling of 20242536 in words is "twenty million, two hundred forty-two thousand, five hundred thirty-six".