78417830028 has 48 divisors (see below), whose sum is σ = 193100544000. Its totient is φ = 24699837888.

The previous prime is 78417829981. The next prime is 78417830063. The reversal of 78417830028 is 82003871487.

It is a happy number.

It is a super-2 number, since 2×78417830028² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353388 + ... + 530771.

It is an arithmetic number, because the mean of its divisors is an integer number (4022928000).

Almost surely, 2^78417830028 is an apocalyptic number.

It is an amenable number.

78417830028 is an abundant number, since it is smaller than the sum of its proper divisors (114682713972).

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

78417830028 is a wasteful number, since it uses less digits than its factorization.

78417830028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884574 (or 884572 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 48.

The spelling of 78417830028 in words is "seventy-eight billion, four hundred seventeen million, eight hundred thirty thousand, twenty-eight".