78089814 has 24 divisors (see below), whose sum is σ = 184576392. Its totient is φ = 23663520.

The previous prime is 78089813. The next prime is 78089819. The reversal of 78089814 is 41898087.

It is a self number, because there is not a number n which added to its sum of digits gives 78089814.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78089813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196999 + ... + 197394.

It is an arithmetic number, because the mean of its divisors is an integer number (7690683).

Almost surely, 2^78089814 is an apocalyptic number.

78089814 is an abundant number, since it is smaller than the sum of its proper divisors (106486578).

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

78089814 is a wasteful number, since it uses less digits than its factorization.

78089814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394412 (or 394409 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 78089814 is about 8836.8441199333. The cubic root of 78089814 is about 427.4297986706.

The spelling of 78089814 in words is "seventy-eight million, eighty-nine thousand, eight hundred fourteen".