14999220 has 72 divisors (see below), whose sum is σ = 47488896. Its totient is φ = 3824832.

The previous prime is 14999213. The next prime is 14999221. The reversal of 14999220 is 2299941.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14999221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2329 + ... + 5951.

It is an arithmetic number, because the mean of its divisors is an integer number (659568).

Almost surely, 2^14999220 is an apocalyptic number.

14999220 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 14999220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23744448).

14999220 is an abundant number, since it is smaller than the sum of its proper divisors (32489676).

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

14999220 is a wasteful number, since it uses less digits than its factorization.

14999220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661 (or 3656 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 14999220 is about 3872.8826473313. The cubic root of 14999220 is about 246.6169325914.

The spelling of 14999220 in words is "fourteen million, nine hundred ninety-nine thousand, two hundred twenty".