20399736030 has 32 divisors (see below), whose sum is σ = 49075689888. Its totient is φ = 5427004800.

The previous prime is 20399736001. The next prime is 20399736043. The reversal of 20399736030 is 3063799302.

It is a super-2 number, since 2×20399736030² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 794961 + ... + 820220.

It is an arithmetic number, because the mean of its divisors is an integer number (1533615309).

Almost surely, 2^20399736030 is an apocalyptic number.

20399736030 is an abundant number, since it is smaller than the sum of its proper divisors (28675953858).

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

20399736030 is a wasteful number, since it uses less digits than its factorization.

20399736030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615612.

The product of its (nonzero) digits is 183708, while the sum is 42.

The spelling of 20399736030 in words is "twenty billion, three hundred ninety-nine million, seven hundred thirty-six thousand, thirty".