89129720 has 16 divisors (see below), whose sum is σ = 200541960. Its totient is φ = 35651872.

The previous prime is 89129717. The next prime is 89129749. The reversal of 89129720 is 2792198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114082 + ... + 1114161.

Almost surely, 2^89129720 is an apocalyptic number.

It is an amenable number.

89129720 is an abundant number, since it is smaller than the sum of its proper divisors (111412240).

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

89129720 is a wasteful number, since it uses less digits than its factorization.

89129720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228254 (or 2228250 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 89129720 is about 9440.8537749507. The cubic root of 89129720 is about 446.6913206362.

The spelling of 89129720 in words is "eighty-nine million, one hundred twenty-nine thousand, seven hundred twenty".