3572521920 has 336 divisors, whose sum is σ = 13990758912. Its totient is φ = 828241920.

The previous prime is 3572521891. The next prime is 3572521951. The reversal of 3572521920 is 291252753.

3572521920 is a `hidden beast` number, since 3 + 572 + 52 + 19 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 726189 + ... + 731091.

Almost surely, 2^3572521920 is an apocalyptic number.

3572521920 is a gapful number since it is divisible by the number (30) 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 3572521920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6995379456).

3572521920 is an abundant number, since it is smaller than the sum of its proper divisors (10418236992).

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

3572521920 is a wasteful number, since it uses less digits than its factorization.

3572521920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4960 (or 4947 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 3572521920 is about 59770.5773771678. The cubic root of 3572521920 is about 1528.7095103208.

The spelling of 3572521920 in words is "three billion, five hundred seventy-two million, five hundred twenty-one thousand, nine hundred twenty".