99918750 has 72 divisors (see below), whose sum is σ = 253249416. Its totient is φ = 26280000.

The previous prime is 99918737. The next prime is 99918761. The reversal of 99918750 is 5781999.

It is a self number, because there is not a number n which added to its sum of digits gives 99918750.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1368714 + ... + 1368786.

It is an arithmetic number, because the mean of its divisors is an integer number (3517353).

Almost surely, 2^99918750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99918750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126624708).

99918750 is an abundant number, since it is smaller than the sum of its proper divisors (153330666).

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

99918750 is an frugal number, since it uses more digits than its factorization.

99918750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 48.

The square root of 99918750 is about 9995.9366744693. The cubic root of 99918750 is about 464.0331396019.

The spelling of 99918750 in words is "ninety-nine million, nine hundred eighteen thousand, seven hundred fifty".