77236530 has 64 divisors (see below), whose sum is σ = 221073408. Its totient is φ = 16885440.

The previous prime is 77236499. The next prime is 77236543. The reversal of 77236530 is 3563277.

It is a junction number, because it is equal to n+sod(n) for n = 77236491 and 77236500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3166 + ... + 12825.

It is an arithmetic number, because the mean of its divisors is an integer number (3454272).

Almost surely, 2^77236530 is an apocalyptic number.

77236530 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

77236530 is an abundant number, since it is smaller than the sum of its proper divisors (143836878).

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

77236530 is a wasteful number, since it uses less digits than its factorization.

77236530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16031.

The product of its (nonzero) digits is 26460, while the sum is 33.

The square root of 77236530 is about 8788.4316006896. The cubic root of 77236530 is about 425.8672578989.

The spelling of 77236530 in words is "seventy-seven million, two hundred thirty-six thousand, five hundred thirty".