89638770 has 64 divisors (see below), whose sum is σ = 243895680. Its totient is φ = 20901888.

The previous prime is 89638727. The next prime is 89638777. The reversal of 89638770 is 7783698.

It is a super-2 number, since 2×89638770² = 16070218174225800, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89638777) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1362 + ... + 13458.

It is an arithmetic number, because the mean of its divisors is an integer number (3810870).

Almost surely, 2^89638770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89638770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121947840).

89638770 is an abundant number, since it is smaller than the sum of its proper divisors (154256910).

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

89638770 is a wasteful number, since it uses less digits than its factorization.

89638770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12139.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 89638770 is about 9467.7753458772. The cubic root of 89638770 is about 447.5401085530.

The spelling of 89638770 in words is "eighty-nine million, six hundred thirty-eight thousand, seven hundred seventy".