3731722272 has 96 divisors (see below), whose sum is σ = 10897286400. Its totient is φ = 1242411264.

The previous prime is 3731722223. The next prime is 3731722273. The reversal of 3731722272 is 2722271373.

3731722272 is a `hidden beast` number, since 373 + 17 + 2 + 2 + 272 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×3731722272² = 27851502230681683968, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (3731722273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 895618 + ... + 899774.

It is an arithmetic number, because the mean of its divisors is an integer number (113513400).

Almost surely, 2^3731722272 is an apocalyptic number.

3731722272 is a gapful number since it is divisible by the number (32) 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 3731722272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5448643200).

3731722272 is an abundant number, since it is smaller than the sum of its proper divisors (7165564128).

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

3731722272 is a wasteful number, since it uses less digits than its factorization.

3731722272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5215 (or 5201 counting only the distinct ones).

The product of its digits is 49392, while the sum is 36.

The square root of 3731722272 is about 61087.8242532831. The cubic root of 3731722272 is about 1551.0880008732.

The spelling of 3731722272 in words is "three billion, seven hundred thirty-one million, seven hundred twenty-two thousand, two hundred seventy-two".