78958 has 16 divisors (see below), whose sum is σ = 134064. Its totient is φ = 34560.

The previous prime is 78941. The next prime is 78977. The reversal of 78958 is 85987.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 766 + ... + 862.

It is an arithmetic number, because the mean of its divisors is an integer number (8379).

2⁷⁸⁹⁵⁸ is an apocalyptic number.

78958 is a deficient number, since it is larger than the sum of its proper divisors (55106).

78958 is a wasteful number, since it uses less digits than its factorization.

78958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147.

The product of its digits is 20160, while the sum is 37.

The square root of 78958 is about 280.9946618710. The cubic root of 78958 is about 42.9007989013.

The spelling of 78958 in words is "seventy-eight thousand, nine hundred fifty-eight".