89128700 has 18 divisors (see below), whose sum is σ = 193409496. Its totient is φ = 35651440.

The previous prime is 89128691. The next prime is 89128709. The reversal of 89128700 is 782198.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (89128691) and next prime (89128709).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89128709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 445544 + ... + 445743.

It is an arithmetic number, because the mean of its divisors is an integer number (10744972).

Almost surely, 2^89128700 is an apocalyptic number.

It is an amenable number.

89128700 is an abundant number, since it is smaller than the sum of its proper divisors (104280796).

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

89128700 is a wasteful number, since it uses less digits than its factorization.

89128700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891301 (or 891294 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 89128700 is about 9440.7997542581. The cubic root of 89128700 is about 446.6896166520.

The spelling of 89128700 in words is "eighty-nine million, one hundred twenty-eight thousand, seven hundred".