7678980 has 72 divisors (see below), whose sum is σ = 23943192. Its totient is φ = 1990656.

The previous prime is 7678967. The next prime is 7678999. The reversal of 7678980 is 898767.

It can be written as a sum of positive squares in 4 ways, for example, as 3218436 + 4460544 = 1794^2 + 2112^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6084 + ... + 7236.

Almost surely, 2^7678980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7678980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11971596).

7678980 is an abundant number, since it is smaller than the sum of its proper divisors (16264212).

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

7678980 is a wasteful number, since it uses less digits than its factorization.

7678980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205 (or 1200 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 7678980 is about 2771.0972556011. The cubic root of 7678980 is about 197.2882310586.

The spelling of 7678980 in words is "seven million, six hundred seventy-eight thousand, nine hundred eighty".