80790020 has 48 divisors (see below), whose sum is σ = 174182400. Its totient is φ = 31464576.

The previous prime is 80790013. The next prime is 80790067. The reversal of 80790020 is 2009708.

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, 210749 + ... + 211131.

It is an arithmetic number, because the mean of its divisors is an integer number (3628800).

Almost surely, 2^80790020 is an apocalyptic number.

It is an amenable number.

80790020 is an abundant number, since it is smaller than the sum of its proper divisors (93392380).

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

80790020 is a wasteful number, since it uses less digits than its factorization.

80790020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 642 counting only the distinct ones).

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

The square root of 80790020 is about 8988.3268743410. The cubic root of 80790020 is about 432.3006666057.

Adding to 80790020 its reverse (2009708), we get a palindrome (82799728).

The spelling of 80790020 in words is "eighty million, seven hundred ninety thousand, twenty".