78026994 has 96 divisors (see below), whose sum is σ = 187125120. Its totient is φ = 23417856.

The previous prime is 78026989. The next prime is 78027011. The reversal of 78026994 is 49962087.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 804354 + ... + 804450.

It is an arithmetic number, because the mean of its divisors is an integer number (1949220).

Almost surely, 2^78026994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78026994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93562560).

78026994 is an abundant number, since it is smaller than the sum of its proper divisors (109098126).

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

78026994 is a wasteful number, since it uses less digits than its factorization.

78026994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 78026994 is about 8833.2889684420. The cubic root of 78026994 is about 427.3151514373.

The spelling of 78026994 in words is "seventy-eight million, twenty-six thousand, nine hundred ninety-four".