76823420 has 24 divisors (see below), whose sum is σ = 163604448. Its totient is φ = 30296000.

The previous prime is 76823393. The next prime is 76823423. The reversal of 76823420 is 2432867.

76823420 = 1005² + 1006² + ... + 1075².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76823423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25631 + ... + 28470.

It is an arithmetic number, because the mean of its divisors is an integer number (6816852).

Almost surely, 2^76823420 is an apocalyptic number.

It is an amenable number.

76823420 is an abundant number, since it is smaller than the sum of its proper divisors (86781028).

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

76823420 is a wasteful number, since it uses less digits than its factorization.

76823420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54181 (or 54179 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 76823420 is about 8764.8970330518. The cubic root of 76823420 is about 425.1066306840.

The spelling of 76823420 in words is "seventy-six million, eight hundred twenty-three thousand, four hundred twenty".