76809012 has 48 divisors (see below), whose sum is σ = 205696512. Its totient is φ = 21852000.

The previous prime is 76809011. The next prime is 76809097. The reversal of 76809012 is 21090867.

It is a super-2 number, since 2×76809012² = 11799248648832288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76809011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19263 + ... + 22905.

It is an arithmetic number, because the mean of its divisors is an integer number (4285344).

Almost surely, 2^76809012 is an apocalyptic number.

It is an amenable number.

76809012 is an abundant number, since it is smaller than the sum of its proper divisors (128887500).

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

76809012 is a wasteful number, since it uses less digits than its factorization.

76809012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3908 (or 3906 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 76809012 is about 8764.0750795506. The cubic root of 76809012 is about 425.0800532016.

Adding to 76809012 its reverse (21090867), we get a palindrome (97899879).

The spelling of 76809012 in words is "seventy-six million, eight hundred nine thousand, twelve".