76308820 has 24 divisors (see below), whose sum is σ = 183141504. Its totient is φ = 26162976.

The previous prime is 76308811. The next prime is 76308821. The reversal of 76308820 is 2880367.

It is a happy number.

It is a super-3 number, since 3×76308820³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76308821) 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, 272392 + ... + 272671.

It is an arithmetic number, because the mean of its divisors is an integer number (7630896).

Almost surely, 2^76308820 is an apocalyptic number.

76308820 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

76308820 is an abundant number, since it is smaller than the sum of its proper divisors (106832684).

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

76308820 is a wasteful number, since it uses less digits than its factorization.

76308820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545079 (or 545077 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 76308820 is about 8735.4919724077. The cubic root of 76308820 is about 424.1553142289.

The spelling of 76308820 in words is "seventy-six million, three hundred eight thousand, eight hundred twenty".