80812380 has 48 divisors (see below), whose sum is σ = 246847104. Its totient is φ = 19590720.

The previous prime is 80812379. The next prime is 80812399. The reversal of 80812380 is 8321808.

It is a super-2 number, since 2×80812380² = 13061281522528800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60562 + ... + 61881.

It is an arithmetic number, because the mean of its divisors is an integer number (5142648).

Almost surely, 2^80812380 is an apocalyptic number.

It is an amenable number.

80812380 is an abundant number, since it is smaller than the sum of its proper divisors (166034724).

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

80812380 is a wasteful number, since it uses less digits than its factorization.

80812380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122466 (or 122464 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 80812380 is about 8989.5706237840. The cubic root of 80812380 is about 432.3405450927.

The spelling of 80812380 in words is "eighty million, eight hundred twelve thousand, three hundred eighty".