14991020 has 24 divisors (see below), whose sum is σ = 34343568. Its totient is φ = 5451200.

The previous prime is 14991013. The next prime is 14991023. The reversal of 14991020 is 2019941.

It is not an unprimeable number, because it can be changed into a prime (14991023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33851 + ... + 34290.

It is an arithmetic number, because the mean of its divisors is an integer number (1430982).

Almost surely, 2^14991020 is an apocalyptic number.

14991020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14991020 is an abundant number, since it is smaller than the sum of its proper divisors (19352548).

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

14991020 is a wasteful number, since it uses less digits than its factorization.

14991020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68161 (or 68159 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 14991020 is about 3871.8238596300. The cubic root of 14991020 is about 246.5719829767.

The spelling of 14991020 in words is "fourteen million, nine hundred ninety-one thousand, twenty".