20574372852 has 144 divisors (see below), whose sum is σ = 58918728960. Its totient is φ = 5998924800.

The previous prime is 20574372823. The next prime is 20574372883. The reversal of 20574372852 is 25827347502.

20574372852 is a `hidden beast` number, since 2 + 0 + 574 + 3 + 7 + 28 + 52 = 666.

It is a super-2 number, since 2×20574372852² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20574372798 and 20574372807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1176549 + ... + 1193907.

It is an arithmetic number, because the mean of its divisors is an integer number (409157840).

Almost surely, 2^20574372852 is an apocalyptic number.

20574372852 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20574372852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29459364480).

20574372852 is an abundant number, since it is smaller than the sum of its proper divisors (38344356108).

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

20574372852 is a wasteful number, since it uses less digits than its factorization.

20574372852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17494 (or 17489 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 45.

The spelling of 20574372852 in words is "twenty billion, five hundred seventy-four million, three hundred seventy-two thousand, eight hundred fifty-two".