80709020 has 24 divisors (see below), whose sum is σ = 193701984. Its totient is φ = 27671616.

The previous prime is 80708981. The next prime is 80709023. The reversal of 80709020 is 2090708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80709023) 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, 288107 + ... + 288386.

It is an arithmetic number, because the mean of its divisors is an integer number (8070916).

Almost surely, 2^80709020 is an apocalyptic number.

It is an amenable number.

80709020 is an abundant number, since it is smaller than the sum of its proper divisors (112992964).

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

80709020 is a wasteful number, since it uses less digits than its factorization.

80709020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576509 (or 576507 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 80709020 is about 8983.8199002429. The cubic root of 80709020 is about 432.1561435447.

Adding to 80709020 its reverse (2090708), we get a palindrome (82799728).

The spelling of 80709020 in words is "eighty million, seven hundred nine thousand, twenty".