78418116 has 36 divisors (see below), whose sum is σ = 226541952. Its totient is φ = 22405104.

The previous prime is 78418103. The next prime is 78418141. The reversal of 78418116 is 61181487.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×78418116² = 12298801833978912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155340 + ... + 155843.

It is an arithmetic number, because the mean of its divisors is an integer number (6292832).

Almost surely, 2^78418116 is an apocalyptic number.

It is an amenable number.

78418116 is an abundant number, since it is smaller than the sum of its proper divisors (148123836).

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

78418116 is a wasteful number, since it uses less digits than its factorization.

78418116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311200 (or 311195 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 78418116 is about 8855.4003862050. The cubic root of 78418116 is about 428.0279554920.

The spelling of 78418116 in words is "seventy-eight million, four hundred eighteen thousand, one hundred sixteen".