80010990 has 40 divisors (see below), whose sum is σ = 215142840. Its totient is φ = 21336048.

The previous prime is 80010961. The next prime is 80010991. The reversal of 80010990 is 9901008.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80010991) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 48580 + ... + 50199.

It is an arithmetic number, because the mean of its divisors is an integer number (5378571).

Almost surely, 2^80010990 is an apocalyptic number.

80010990 is an abundant number, since it is smaller than the sum of its proper divisors (135131850).

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

80010990 is a wasteful number, since it uses less digits than its factorization.

80010990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98798 (or 98789 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 80010990 is about 8944.8862485780. The cubic root of 80010990 is about 430.9066681340.

Adding to 80010990 its reverse (9901008), we get a palindrome (89911998).

The spelling of 80010990 in words is "eighty million, ten thousand, nine hundred ninety".