78458950 has 24 divisors (see below), whose sum is σ = 146175912. Its totient is φ = 31331520.

The previous prime is 78458917. The next prime is 78458971. The reversal of 78458950 is 5985487.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 78458950.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46522 + ... + 48178.

It is an arithmetic number, because the mean of its divisors is an integer number (6090663).

Almost surely, 2^78458950 is an apocalyptic number.

78458950 is the 4735-th nonagonal number.

78458950 is a deficient number, since it is larger than the sum of its proper divisors (67716962).

78458950 is a wasteful number, since it uses less digits than its factorization.

78458950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616 (or 2611 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 78458950 is about 8857.7056848825. The cubic root of 78458950 is about 428.1022370550.

The spelling of 78458950 in words is "seventy-eight million, four hundred fifty-eight thousand, nine hundred fifty".