78050390 has 64 divisors (see below), whose sum is σ = 159694848. Its totient is φ = 27216000.

The previous prime is 78050327. The next prime is 78050411. The reversal of 78050390 is 9305087.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 516815 + ... + 516965.

It is an arithmetic number, because the mean of its divisors is an integer number (2495232).

Almost surely, 2^78050390 is an apocalyptic number.

78050390 is an abundant number, since it is smaller than the sum of its proper divisors (81644458).

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

78050390 is a wasteful number, since it uses less digits than its factorization.

78050390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 78050390 is about 8834.6131777232. The cubic root of 78050390 is about 427.3578565991.

The spelling of 78050390 in words is "seventy-eight million, fifty thousand, three hundred ninety".