3652578972 has 108 divisors (see below), whose sum is σ = 11002498416. Its totient is φ = 1018120320.

The previous prime is 3652578967. The next prime is 3652578973. The reversal of 3652578972 is 2798752563.

3652578972 is a `hidden beast` number, since 3 + 65 + 2 + 578 + 9 + 7 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3652578973) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 47073 + ... + 97575.

Almost surely, 2^3652578972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3652578972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5501249208).

3652578972 is an abundant number, since it is smaller than the sum of its proper divisors (7349919444).

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

3652578972 is a wasteful number, since it uses less digits than its factorization.

3652578972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50568 (or 50556 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The square root of 3652578972 is about 60436.5698232453. The cubic root of 3652578972 is about 1540.0442686999.

The spelling of 3652578972 in words is "three billion, six hundred fifty-two million, five hundred seventy-eight thousand, nine hundred seventy-two".