7472978 has 6 divisors (see below), whose sum is σ = 11215269. Its totient is φ = 3734556.

The previous prime is 7472951. The next prime is 7472989. The reversal of 7472978 is 8792747.

It can be written as a sum of positive squares in 2 ways, for example, as 7219969 + 253009 = 2687^2 + 503^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1933.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2900 + ... + 4832.

Almost surely, 2^7472978 is an apocalyptic number.

7472978 is a deficient number, since it is larger than the sum of its proper divisors (3742291).

7472978 is an frugal number, since it uses more digits than its factorization.

7472978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3868 (or 1935 counting only the distinct ones).

The product of its digits is 197568, while the sum is 44.

The square root of 7472978 is about 2733.6748160672. The cubic root of 7472978 is about 195.5080157100.

The spelling of 7472978 in words is "seven million, four hundred seventy-two thousand, nine hundred seventy-eight".