78889234 has 16 divisors (see below), whose sum is σ = 122651136. Its totient is φ = 38016000.

The previous prime is 78889199. The next prime is 78889243. The reversal of 78889234 is 43298887.

It is a super-2 number, since 2×78889234² = 12447022482213512, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13459 + ... + 18409.

It is an arithmetic number, because the mean of its divisors is an integer number (7665696).

Almost surely, 2^78889234 is an apocalyptic number.

78889234 is a deficient number, since it is larger than the sum of its proper divisors (43761902).

78889234 is a wasteful number, since it uses less digits than its factorization.

78889234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5241.

The product of its digits is 774144, while the sum is 49.

The square root of 78889234 is about 8881.9611573120. The cubic root of 78889234 is about 428.8834091441.

The spelling of 78889234 in words is "seventy-eight million, eight hundred eighty-nine thousand, two hundred thirty-four".