78494234 has 16 divisors (see below), whose sum is σ = 144912768. Its totient is φ = 31052592.

The previous prime is 78494233. The next prime is 78494261. The reversal of 78494234 is 43249487.

It is a super-2 number, since 2×78494234² = 12322689542493512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78494191 and 78494200.

It is not an unprimeable number, because it can be changed into a prime (78494233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215462 + ... + 215825.

It is an arithmetic number, because the mean of its divisors is an integer number (9057048).

Almost surely, 2^78494234 is an apocalyptic number.

78494234 is a deficient number, since it is larger than the sum of its proper divisors (66418534).

78494234 is a wasteful number, since it uses less digits than its factorization.

78494234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431309.

The product of its digits is 193536, while the sum is 41.

The square root of 78494234 is about 8859.6971731544. The cubic root of 78494234 is about 428.1664018000.

The spelling of 78494234 in words is "seventy-eight million, four hundred ninety-four thousand, two hundred thirty-four".