14557440 has 144 divisors (see below), whose sum is σ = 49448448. Its totient is φ = 3637248.

The previous prime is 14557421. The next prime is 14557471. The reversal of 14557440 is 4475541.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 14557398 and 14557407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65169 + ... + 65391.

It is an arithmetic number, because the mean of its divisors is an integer number (343392).

Almost surely, 2^14557440 is an apocalyptic number.

14557440 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 14557440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24724224).

14557440 is an abundant number, since it is smaller than the sum of its proper divisors (34891008).

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

14557440 is a wasteful number, since it uses less digits than its factorization.

14557440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 14557440 is about 3815.4213397736. The cubic root of 14557440 is about 244.1715178531.

The spelling of 14557440 in words is "fourteen million, five hundred fifty-seven thousand, four hundred forty".