99578430 has 256 divisors, whose sum is σ = 331776000. Its totient is φ = 20746368.

The previous prime is 99578399. The next prime is 99578441. The reversal of 99578430 is 3487599.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1687741 + ... + 1687799.

It is an arithmetic number, because the mean of its divisors is an integer number (1296000).

Almost surely, 2^99578430 is an apocalyptic number.

99578430 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 99578430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165888000).

99578430 is an abundant number, since it is smaller than the sum of its proper divisors (232197570).

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

99578430 is a wasteful number, since it uses less digits than its factorization.

99578430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 99578430 is about 9978.8992378919. The cubic root of 99578430 is about 463.5057131081.

The spelling of 99578430 in words is "ninety-nine million, five hundred seventy-eight thousand, four hundred thirty".