77226238 has 16 divisors (see below), whose sum is σ = 116928000. Its totient is φ = 38252376.

The previous prime is 77226181. The next prime is 77226251. The reversal of 77226238 is 83262277.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 77226197 and 77226206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154513 + ... + 155011.

It is an arithmetic number, because the mean of its divisors is an integer number (7308000).

Almost surely, 2^77226238 is an apocalyptic number.

77226238 is a deficient number, since it is larger than the sum of its proper divisors (39701762).

77226238 is a wasteful number, since it uses less digits than its factorization.

77226238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071.

The product of its digits is 56448, while the sum is 37.

The square root of 77226238 is about 8787.8460387060. The cubic root of 77226238 is about 425.8483410275.

The spelling of 77226238 in words is "seventy-seven million, two hundred twenty-six thousand, two hundred thirty-eight".