78083870 has 16 divisors (see below), whose sum is σ = 140808240. Its totient is φ = 31176384.

The previous prime is 78083869. The next prime is 78083899. The reversal of 78083870 is 7838087.

It is a Curzon number.

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, 1172 + ... + 12551.

It is an arithmetic number, because the mean of its divisors is an integer number (8800515).

Almost surely, 2^78083870 is an apocalyptic number.

78083870 is a deficient number, since it is larger than the sum of its proper divisors (62724370).

78083870 is a wasteful number, since it uses less digits than its factorization.

78083870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14299.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 78083870 is about 8836.5077943722. The cubic root of 78083870 is about 427.4189534355.

The spelling of 78083870 in words is "seventy-eight million, eighty-three thousand, eight hundred seventy".