77387234 has 4 divisors (see below), whose sum is σ = 116080854. Its totient is φ = 38693616.

The previous prime is 77387221. The next prime is 77387243. The reversal of 77387234 is 43278377.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43278377 = 541 ⋅79997.

It can be written as a sum of positive squares in only one way, i.e., 77387209 + 25 = 8797^2 + 5^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77387191 and 77387200.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19346807 + ... + 19346810.

Almost surely, 2^77387234 is an apocalyptic number.

77387234 is a deficient number, since it is larger than the sum of its proper divisors (38693620).

77387234 is a wasteful number, since it uses less digits than its factorization.

77387234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38693619.

The product of its digits is 197568, while the sum is 41.

The square root of 77387234 is about 8797.0014209388. The cubic root of 77387234 is about 426.1440621598.

The spelling of 77387234 in words is "seventy-seven million, three hundred eighty-seven thousand, two hundred thirty-four".