78370650 has 36 divisors (see below), whose sum is σ = 210557022. Its totient is φ = 20898720.

The previous prime is 78370631. The next prime is 78370651. The reversal of 78370650 is 5607387.

It can be written as a sum of positive squares in 3 ways, for example, as 45846441 + 32524209 = 6771^2 + 5703^2 .

It is a super-2 number, since 2×78370650² = 12283917562845000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78370651) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 86629 + ... + 87528.

Almost surely, 2^78370650 is an apocalyptic number.

78370650 is an abundant number, since it is smaller than the sum of its proper divisors (132186372).

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

78370650 is a wasteful number, since it uses less digits than its factorization.

78370650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174175 (or 174167 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 78370650 is about 8852.7199210186. The cubic root of 78370650 is about 427.9415771713.

The spelling of 78370650 in words is "seventy-eight million, three hundred seventy thousand, six hundred fifty".