89840780 has 24 divisors (see below), whose sum is σ = 189187152. Its totient is φ = 35836992.

The previous prime is 89840771. The next prime is 89840791. The reversal of 89840780 is 8704898.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1439 + ... + 13481.

It is an arithmetic number, because the mean of its divisors is an integer number (7882798).

Almost surely, 2^89840780 is an apocalyptic number.

It is an amenable number.

89840780 is an abundant number, since it is smaller than the sum of its proper divisors (99346372).

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

89840780 is a wasteful number, since it uses less digits than its factorization.

89840780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12425 (or 12423 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 89840780 is about 9478.4376349692. The cubic root of 89840780 is about 447.8760485636.

The spelling of 89840780 in words is "eighty-nine million, eight hundred forty thousand, seven hundred eighty".