4020972732 has 72 divisors (see below), whose sum is σ = 12126759120. Its totient is φ = 1148847840.

The previous prime is 4020972721. The next prime is 4020972733. The reversal of 4020972732 is 2372790204.

It is a super-2 number, since 2×4020972732² = 32336443422975087648, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020972733) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 374619 + ... + 385202.

It is an arithmetic number, because the mean of its divisors is an integer number (168427210).

Almost surely, 2^4020972732 is an apocalyptic number.

4020972732 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

4020972732 is an abundant number, since it is smaller than the sum of its proper divisors (8105786388).

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

4020972732 is a wasteful number, since it uses less digits than its factorization.

4020972732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759848 (or 759833 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 4020972732 is about 63411.1404407774. The cubic root of 4020972732 is about 1590.1705619806.

The spelling of 4020972732 in words is "four billion, twenty million, nine hundred seventy-two thousand, seven hundred thirty-two".