89297780 has 48 divisors (see below), whose sum is σ = 220316544. Its totient is φ = 29973120.

The previous prime is 89297779. The next prime is 89297783. The reversal of 89297780 is 8779298.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89297783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12752 + ... + 18471.

It is an arithmetic number, because the mean of its divisors is an integer number (4589928).

Almost surely, 2^89297780 is an apocalyptic number.

It is an amenable number.

89297780 is an abundant number, since it is smaller than the sum of its proper divisors (131018764).

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

89297780 is a wasteful number, since it uses less digits than its factorization.

89297780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31256 (or 31254 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 50.

The square root of 89297780 is about 9449.7502612503. The cubic root of 89297780 is about 446.9718997328.

The spelling of 89297780 in words is "eighty-nine million, two hundred ninety-seven thousand, seven hundred eighty".