7407940 has 24 divisors (see below), whose sum is σ = 15607872. Its totient is φ = 2953440.

The previous prime is 7407899. The next prime is 7407949. The reversal of 7407940 is 497047.

It is not an unprimeable number, because it can be changed into a prime (7407949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11425 + ... + 12055.

It is an arithmetic number, because the mean of its divisors is an integer number (650328).

Almost surely, 2^7407940 is an apocalyptic number.

It is an amenable number.

7407940 is an abundant number, since it is smaller than the sum of its proper divisors (8199932).

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

7407940 is a wasteful number, since it uses less digits than its factorization.

7407940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227 (or 1225 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 7407940 is about 2721.7531115074. The cubic root of 7407940 is about 194.9391876995.

The spelling of 7407940 in words is "seven million, four hundred seven thousand, nine hundred forty".