20301988 has 12 divisors (see below), whose sum is σ = 40604032. Its totient is φ = 8700840.

The previous prime is 20301949. The next prime is 20301991. The reversal of 20301988 is 88910302.

20301988 is an admirable number.

It is a super-5 number, since 5×20301988⁵ (a number of 38 digits) contains 55555 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362508 + ... + 362563.

Almost surely, 2^20301988 is an apocalyptic number.

20301988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20301988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20301988 is a wasteful number, since it uses less digits than its factorization.

20301988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725082 (or 725080 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 20301988 is about 4505.7727417170. The cubic root of 20301988 is about 272.8011450662.

The spelling of 20301988 in words is "twenty million, three hundred one thousand, nine hundred eighty-eight".