3640392 has 96 divisors (see below), whose sum is σ = 11681280. Its totient is φ = 1002240.

The previous prime is 3640391. The next prime is 3640409. The reversal of 3640392 is 2930463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640391) 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, 15508 + ... + 15740.

It is an arithmetic number, because the mean of its divisors is an integer number (121680).

Almost surely, 2^3640392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3640392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5840640).

3640392 is an abundant number, since it is smaller than the sum of its proper divisors (8040888).

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

3640392 is a wasteful number, since it uses less digits than its factorization.

3640392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 3640392 is about 1907.9811319822. The cubic root of 3640392 is about 153.8329554318.

The spelling of 3640392 in words is "three million, six hundred forty thousand, three hundred ninety-two".