78370234 has 4 divisors (see below), whose sum is σ = 117555354. Its totient is φ = 39185116.

The previous prime is 78370217. The next prime is 78370241. The reversal of 78370234 is 43207387.

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

It can be written as a sum of positive squares in only one way, i.e., 66830625 + 11539609 = 8175^2 + 3397^2 .

It is a super-2 number, since 2×78370234² = 12283787154429512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78370234.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19592557 + ... + 19592560.

Almost surely, 2^78370234 is an apocalyptic number.

78370234 is a deficient number, since it is larger than the sum of its proper divisors (39185120).

78370234 is a wasteful number, since it uses less digits than its factorization.

78370234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39185119.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 78370234 is about 8852.6964253836. The cubic root of 78370234 is about 427.9408199830.

It can be divided in two parts, 783 and 70234, that added together give a palindrome (71017).

The spelling of 78370234 in words is "seventy-eight million, three hundred seventy thousand, two hundred thirty-four".