89621020 has 48 divisors (see below), whose sum is σ = 195955200. Its totient is φ = 34388480.

The previous prime is 89621011. The next prime is 89621029. The reversal of 89621020 is 2012698.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (89621011) and next prime (89621029).

It is a self number, because there is not a number n which added to its sum of digits gives 89621020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89621029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110376 + ... + 111184.

It is an arithmetic number, because the mean of its divisors is an integer number (4082400).

Almost surely, 2^89621020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89621020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97977600).

89621020 is an abundant number, since it is smaller than the sum of its proper divisors (106334180).

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

89621020 is a wasteful number, since it uses less digits than its factorization.

89621020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 89621020 is about 9466.8379092493. The cubic root of 89621020 is about 447.5105664203.

The spelling of 89621020 in words is "eighty-nine million, six hundred twenty-one thousand, twenty".