16012040 has 64 divisors (see below), whose sum is σ = 39726720. Its totient is φ = 5760000.

The previous prime is 16012037. The next prime is 16012049. The reversal of 16012040 is 4021061.

It is not an unprimeable number, because it can be changed into a prime (16012049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66320 + ... + 66560.

It is an arithmetic number, because the mean of its divisors is an integer number (620730).

Almost surely, 2^16012040 is an apocalyptic number.

16012040 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 16012040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19863360).

16012040 is an abundant number, since it is smaller than the sum of its proper divisors (23714680).

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

16012040 is a wasteful number, since it uses less digits than its factorization.

16012040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 16012040 is about 4001.5047169784. The cubic root of 16012040 is about 252.0474001708.

The spelling of 16012040 in words is "sixteen million, twelve thousand, forty".