80990370 has 24 divisors (see below), whose sum is σ = 210575196. Its totient is φ = 21597408.

The previous prime is 80990341. The next prime is 80990389. The reversal of 80990370 is 7309908.

It can be written as a sum of positive squares in 2 ways, for example, as 74805201 + 6185169 = 8649^2 + 2487^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 449857 + ... + 450036.

Almost surely, 2^80990370 is an apocalyptic number.

80990370 is an abundant number, since it is smaller than the sum of its proper divisors (129584826).

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

80990370 is a wasteful number, since it uses less digits than its factorization.

80990370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899906 (or 899903 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 80990370 is about 8999.4649840977. The cubic root of 80990370 is about 432.6577236678.

The spelling of 80990370 in words is "eighty million, nine hundred ninety thousand, three hundred seventy".