76830408 has 36 divisors (see below), whose sum is σ = 208283985. Its totient is φ = 25585344.

The previous prime is 76830371. The next prime is 76830409. The reversal of 76830408 is 80403867.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 52446564 + 24383844 = 7242^2 + 4938^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6198.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (76830409) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 73860 + ... + 74892.

Almost surely, 2^76830408 is an apocalyptic number.

It is an amenable number.

76830408 is an abundant number, since it is smaller than the sum of its proper divisors (131453577).

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

76830408 is a wasteful number, since it uses less digits than its factorization.

76830408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 76830408 is about 8765.2956595884. The cubic root of 76830408 is about 425.1195197877.

The spelling of 76830408 in words is "seventy-six million, eight hundred thirty thousand, four hundred eight".