16012540 has 24 divisors (see below), whose sum is σ = 33963552. Its totient is φ = 6340800.

The previous prime is 16012511. The next prime is 16012637. The reversal of 16012540 is 4521061.

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, 1944 + ... + 5983.

It is an arithmetic number, because the mean of its divisors is an integer number (1415148).

Almost surely, 2^16012540 is an apocalyptic number.

16012540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16012540 is an abundant number, since it is smaller than the sum of its proper divisors (17951012).

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

16012540 is a wasteful number, since it uses less digits than its factorization.

16012540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8037 (or 8035 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 16012540 is about 4001.5671929883. The cubic root of 16012540 is about 252.0500236630.

The spelling of 16012540 in words is "sixteen million, twelve thousand, five hundred forty".