89940240 has 160 divisors (see below), whose sum is σ = 333728640. Its totient is φ = 22132224.

The previous prime is 89940233. The next prime is 89940247. The reversal of 89940240 is 4204998.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (89940233) and next prime (89940247).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 89940195 and 89940204.

It is not an unprimeable number, because it can be changed into a prime (89940247) 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, 26479 + ... + 29681.

It is an arithmetic number, because the mean of its divisors is an integer number (2085804).

Almost surely, 2^89940240 is an apocalyptic number.

89940240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89940240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166864320).

89940240 is an abundant number, since it is smaller than the sum of its proper divisors (243788400).

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

89940240 is a wasteful number, since it uses less digits than its factorization.

89940240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238 (or 3226 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 89940240 is about 9483.6828289436. The cubic root of 89940240 is about 448.0412642689.

The spelling of 89940240 in words is "eighty-nine million, nine hundred forty thousand, two hundred forty".