99426240 has 336 divisors, whose sum is σ = 380390400. Its totient is φ = 23721984.

The previous prime is 99426233. The next prime is 99426253. The reversal of 99426240 is 4262499.

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 = 99426195 and 99426204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1258521 + ... + 1258599.

Almost surely, 2^99426240 is an apocalyptic number.

99426240 is a gapful number since it is divisible by the number (90) 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 99426240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190195200).

99426240 is an abundant number, since it is smaller than the sum of its proper divisors (280964160).

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

99426240 is a wasteful number, since it uses less digits than its factorization.

99426240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 99426240 is about 9971.2707314564. The cubic root of 99426240 is about 463.2694607995.

It can be divided in two parts, 9 and 9426240, that added together give a palindrome (9426249).

The spelling of 99426240 in words is "ninety-nine million, four hundred twenty-six thousand, two hundred forty".