3720438 has 16 divisors (see below), whose sum is σ = 8267760. Its totient is φ = 1240128.

The previous prime is 3720427. The next prime is 3720469. The reversal of 3720438 is 8340273.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34395 + ... + 34502.

It is an arithmetic number, because the mean of its divisors is an integer number (516735).

Almost surely, 2^3720438 is an apocalyptic number.

3720438 is an abundant number, since it is smaller than the sum of its proper divisors (4547322).

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

3720438 is a wasteful number, since it uses less digits than its factorization.

3720438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68908 (or 68902 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 3720438 is about 1928.8436950671. The cubic root of 3720438 is about 154.9522988838.

The spelling of 3720438 in words is "three million, seven hundred twenty thousand, four hundred thirty-eight".