77430534 has 32 divisors (see below), whose sum is σ = 158578560. Its totient is φ = 25198272.

The previous prime is 77430527. The next prime is 77430547. The reversal of 77430534 is 43503477.

It is a junction number, because it is equal to n+sod(n) for n = 77430495 and 77430504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43449 + ... + 45195.

It is an arithmetic number, because the mean of its divisors is an integer number (4955580).

Almost surely, 2^77430534 is an apocalyptic number.

77430534 is an abundant number, since it is smaller than the sum of its proper divisors (81148026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77430534 is a wasteful number, since it uses less digits than its factorization.

77430534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924.

The product of its (nonzero) digits is 35280, while the sum is 33.

The square root of 77430534 is about 8799.4621426539. The cubic root of 77430534 is about 426.2235265906.

The spelling of 77430534 in words is "seventy-seven million, four hundred thirty thousand, five hundred thirty-four".