7438940 has 24 divisors (see below), whose sum is σ = 15676080. Its totient is φ = 2965248.

The previous prime is 7438939. The next prime is 7438967. The reversal of 7438940 is 498347.

It is a self number, because there is not a number n which added to its sum of digits gives 7438940.

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, 8231 + ... + 9089.

It is an arithmetic number, because the mean of its divisors is an integer number (653170).

Almost surely, 2^7438940 is an apocalyptic number.

It is an amenable number.

7438940 is an abundant number, since it is smaller than the sum of its proper divisors (8237140).

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

7438940 is a wasteful number, since it uses less digits than its factorization.

7438940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301 (or 1299 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 7438940 is about 2727.4420250484. The cubic root of 7438940 is about 195.2107298926.

The spelling of 7438940 in words is "seven million, four hundred thirty-eight thousand, nine hundred forty".