14531540 has 24 divisors (see below), whose sum is σ = 31094280. Its totient is φ = 5702528.

The previous prime is 14531533. The next prime is 14531567. The reversal of 14531540 is 4513541.

It can be written as a sum of positive squares in 4 ways, for example, as 5180176 + 9351364 = 2276^2 + 3058^2 .

It is a super-2 number, since 2×14531540² = 422331309543200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5795 + ... + 7914.

It is an arithmetic number, because the mean of its divisors is an integer number (1295595).

Almost surely, 2^14531540 is an apocalyptic number.

14531540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14531540 is an abundant number, since it is smaller than the sum of its proper divisors (16562740).

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

14531540 is a wasteful number, since it uses less digits than its factorization.

14531540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13771 (or 13769 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 14531540 is about 3812.0257082029. The cubic root of 14531540 is about 244.0266252411.

The spelling of 14531540 in words is "fourteen million, five hundred thirty-one thousand, five hundred forty".