3972270 has 16 divisors (see below), whose sum is σ = 9533520. Its totient is φ = 1059264.

The previous prime is 3972263. The next prime is 3972301. The reversal of 3972270 is 722793.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 132409 = 3972270 / (3 + 9 + 7 + 2 + 2 + 7 + 0).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66175 + ... + 66234.

It is an arithmetic number, because the mean of its divisors is an integer number (595845).

Almost surely, 2^3972270 is an apocalyptic number.

3972270 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3972270 is an abundant number, since it is smaller than the sum of its proper divisors (5561250).

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

3972270 is a wasteful number, since it uses less digits than its factorization.

3972270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132419.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 3972270 is about 1993.0554432830. The cubic root of 3972270 is about 158.3724323262.

The spelling of 3972270 in words is "three million, nine hundred seventy-two thousand, two hundred seventy".