76229840 has 20 divisors (see below), whose sum is σ = 177234564. Its totient is φ = 30491904.

The previous prime is 76229833. The next prime is 76229863. The reversal of 76229840 is 4892267.

It can be written as a sum of positive squares in 2 ways, for example, as 20757136 + 55472704 = 4556^2 + 7448^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 76229794 and 76229803.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 476357 + ... + 476516.

Almost surely, 2^76229840 is an apocalyptic number.

It is an amenable number.

76229840 is an abundant number, since it is smaller than the sum of its proper divisors (101004724).

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

76229840 is a wasteful number, since it uses less digits than its factorization.

76229840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952886 (or 952880 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 76229840 is about 8730.9701637332. The cubic root of 76229840 is about 424.0089294429.

The spelling of 76229840 in words is "seventy-six million, two hundred twenty-nine thousand, eight hundred forty".