14991400 has 48 divisors (see below), whose sum is σ = 36381600. Its totient is φ = 5734080.

The previous prime is 14991397. The next prime is 14991407. The reversal of 14991400 is 419941.

It is not an unprimeable number, because it can be changed into a prime (14991407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2971 + ... + 6229.

It is an arithmetic number, because the mean of its divisors is an integer number (757950).

Almost surely, 2^14991400 is an apocalyptic number.

14991400 is a gapful number since it is divisible by the number (10) 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 14991400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18190800).

14991400 is an abundant number, since it is smaller than the sum of its proper divisors (21390200).

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

14991400 is a wasteful number, since it uses less digits than its factorization.

14991400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3298 (or 3289 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 14991400 is about 3871.8729317993. The cubic root of 14991400 is about 246.5740663697.

The spelling of 14991400 in words is "fourteen million, nine hundred ninety-one thousand, four hundred".