14991900 has 216 divisors, whose sum is σ = 55413120. Its totient is φ = 3062400.

The previous prime is 14991871. The next prime is 14991901. The reversal of 14991900 is 919941.

It is a super-2 number, since 2×14991900² = 449514131220000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14991901) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 254071 + ... + 254129.

Almost surely, 2^14991900 is an apocalyptic number.

14991900 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 14991900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27706560).

14991900 is an abundant number, since it is smaller than the sum of its proper divisors (40421220).

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

14991900 is a wasteful number, since it uses less digits than its factorization.

14991900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 14991900 is about 3871.9374994956. The cubic root of 14991900 is about 246.5768076228.

The spelling of 14991900 in words is "fourteen million, nine hundred ninety-one thousand, nine hundred".