7974740 has 24 divisors (see below), whose sum is σ = 16807560. Its totient is φ = 3178368.

The previous prime is 7974731. The next prime is 7974779. The reversal of 7974740 is 474797.

It can be written as a sum of positive squares in 4 ways, for example, as 824464 + 7150276 = 908^2 + 2674^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7974694 and 7974703.

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, 6926 + ... + 7994.

It is an arithmetic number, because the mean of its divisors is an integer number (700315).

Almost surely, 2^7974740 is an apocalyptic number.

It is an amenable number.

7974740 is an abundant number, since it is smaller than the sum of its proper divisors (8832820).

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

7974740 is a wasteful number, since it uses less digits than its factorization.

7974740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451 (or 1449 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 7974740 is about 2823.9582149883. The cubic root of 7974740 is about 199.7892780593.

The spelling of 7974740 in words is "seven million, nine hundred seventy-four thousand, seven hundred forty".