78425926 has 4 divisors (see below), whose sum is σ = 117638892. Its totient is φ = 39212962.

The previous prime is 78425923. The next prime is 78425933. The reversal of 78425926 is 62952487.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78425923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19606480 + ... + 19606483.

It is an arithmetic number, because the mean of its divisors is an integer number (29409723).

Almost surely, 2^78425926 is an apocalyptic number.

78425926 is a deficient number, since it is larger than the sum of its proper divisors (39212966).

78425926 is a wasteful number, since it uses less digits than its factorization.

78425926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39212965.

The product of its digits is 241920, while the sum is 43.

The square root of 78425926 is about 8855.8413490758. The cubic root of 78425926 is about 428.0421647399.

The spelling of 78425926 in words is "seventy-eight million, four hundred twenty-five thousand, nine hundred twenty-six".