3975720 has 64 divisors (see below), whose sum is σ = 13633920. Its totient is φ = 908544.

The previous prime is 3975709. The next prime is 3975721. The reversal of 3975720 is 275793.

It is not an unprimeable number, because it can be changed into a prime (3975721) 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, 1527 + ... + 3206.

It is an arithmetic number, because the mean of its divisors is an integer number (213030).

Almost surely, 2^3975720 is an apocalyptic number.

3975720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3975720 is an abundant number, since it is smaller than the sum of its proper divisors (9658200).

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

3975720 is a wasteful number, since it uses less digits than its factorization.

3975720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4754 (or 4750 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 33.

The square root of 3975720 is about 1993.9207607124. The cubic root of 3975720 is about 158.4182689877.

The spelling of 3975720 in words is "three million, nine hundred seventy-five thousand, seven hundred twenty".