7275978 has 12 divisors (see below), whose sum is σ = 15764658. Its totient is φ = 2425320.

The previous prime is 7275977. The next prime is 7276001. The reversal of 7275978 is 8795727.

7275978 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5461569 + 1814409 = 2337^2 + 1347^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7275971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202093 + ... + 202128.

Almost surely, 2^7275978 is an apocalyptic number.

7275978 is an abundant number, since it is smaller than the sum of its proper divisors (8488680).

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

7275978 is a wasteful number, since it uses less digits than its factorization.

7275978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404229 (or 404226 counting only the distinct ones).

The product of its digits is 246960, while the sum is 45.

The square root of 7275978 is about 2697.4020834870. The cubic root of 7275978 is about 193.7747234493.

The spelling of 7275978 in words is "seven million, two hundred seventy-five thousand, nine hundred seventy-eight".