78220058 has 8 divisors (see below), whose sum is σ = 134091552. Its totient is φ = 33522876.

The previous prime is 78220049. The next prime is 78220063. The reversal of 78220058 is 85002287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78220058² = 12236754947046728, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2793560 + ... + 2793587.

It is an arithmetic number, because the mean of its divisors is an integer number (16761444).

Almost surely, 2^78220058 is an apocalyptic number.

78220058 is a deficient number, since it is larger than the sum of its proper divisors (55871494).

78220058 is a wasteful number, since it uses less digits than its factorization.

78220058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5587156.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 78220058 is about 8844.2104226437. The cubic root of 78220058 is about 427.6672997488.

The spelling of 78220058 in words is "seventy-eight million, two hundred twenty thousand, fifty-eight".