78380234 has 8 divisors (see below), whose sum is σ = 124486308. Its totient is φ = 36884800.

The previous prime is 78380227. The next prime is 78380279. The reversal of 78380234 is 43208387.

It can be written as a sum of positive squares in 2 ways, for example, as 76825225 + 1555009 = 8765^2 + 1247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78380234² = 12286922163789512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78380194 and 78380203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1152617 + ... + 1152684.

Almost surely, 2^78380234 is an apocalyptic number.

78380234 is a deficient number, since it is larger than the sum of its proper divisors (46106074).

78380234 is a wasteful number, since it uses less digits than its factorization.

78380234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305320.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 78380234 is about 8853.2612070355. The cubic root of 78380234 is about 427.9590208822.

The spelling of 78380234 in words is "seventy-eight million, three hundred eighty thousand, two hundred thirty-four".