77428334 has 8 divisors (see below), whose sum is σ = 116193000. Its totient is φ = 38697336.

The previous prime is 77428331. The next prime is 77428343. The reversal of 77428334 is 43382477.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77428331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1544 + ... + 12539.

It is an arithmetic number, because the mean of its divisors is an integer number (14524125).

Almost surely, 2^77428334 is an apocalyptic number.

77428334 is a deficient number, since it is larger than the sum of its proper divisors (38764666).

77428334 is a wasteful number, since it uses less digits than its factorization.

77428334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16834.

The product of its digits is 112896, while the sum is 38.

The square root of 77428334 is about 8799.3371341255. The cubic root of 77428334 is about 426.2194898513.

The spelling of 77428334 in words is "seventy-seven million, four hundred twenty-eight thousand, three hundred thirty-four".