78147948 has 12 divisors (see below), whose sum is σ = 182345240. Its totient is φ = 26049312.

The previous prime is 78147947. The next prime is 78147977. The reversal of 78147948 is 84974187.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×78147948² = 12214203553221408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78147897 and 78147906.

It is not an unprimeable number, because it can be changed into a prime (78147947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3256153 + ... + 3256176.

Almost surely, 2^78147948 is an apocalyptic number.

It is an amenable number.

78147948 is an abundant number, since it is smaller than the sum of its proper divisors (104197292).

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

78147948 is a wasteful number, since it uses less digits than its factorization.

78147948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6512336 (or 6512334 counting only the distinct ones).

The product of its digits is 451584, while the sum is 48.

The square root of 78147948 is about 8840.1328044323. The cubic root of 78147948 is about 427.5358391348.

The spelling of 78147948 in words is "seventy-eight million, one hundred forty-seven thousand, nine hundred forty-eight".