3120372 has 18 divisors (see below), whose sum is σ = 7887698. Its totient is φ = 1040112.

The previous prime is 3120331. The next prime is 3120373. The reversal of 3120372 is 2730213.

It can be written as a sum of positive squares in only one way, i.e., 2802276 + 318096 = 1674^2 + 564^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3120373) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43303 + ... + 43374.

Almost surely, 2^3120372 is an apocalyptic number.

It is an amenable number.

3120372 is an abundant number, since it is smaller than the sum of its proper divisors (4767326).

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

3120372 is a wasteful number, since it uses less digits than its factorization.

3120372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86687 (or 86682 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 3120372 is about 1766.4574718911. The cubic root of 3120372 is about 146.1286786979.

Adding to 3120372 its reverse (2730213), we get a palindrome (5850585).

The spelling of 3120372 in words is "three million, one hundred twenty thousand, three hundred seventy-two".