20539116 has 48 divisors (see below), whose sum is σ = 57349600. Its totient is φ = 6319296.

The previous prime is 20539109. The next prime is 20539117. The reversal of 20539116 is 61193502.

It is a super-2 number, since 2×20539116² = 843710572122912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 20539116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20539117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5911 + ... + 8718.

Almost surely, 2^20539116 is an apocalyptic number.

20539116 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20539116 is an abundant number, since it is smaller than the sum of its proper divisors (36810484).

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

20539116 is a wasteful number, since it uses less digits than its factorization.

20539116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14655 (or 14647 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 20539116 is about 4532.0101500328. The cubic root of 20539116 is about 273.8591458184.

The spelling of 20539116 in words is "twenty million, five hundred thirty-nine thousand, one hundred sixteen".