16000072 has 24 divisors (see below), whose sum is σ = 32977350. Its totient is φ = 7272320.

The previous prime is 16000057. The next prime is 16000079. The reversal of 16000072 is 27000061.

It can be written as a sum of positive squares in only one way, i.e., 10458756 + 5541316 = 3234^2 + 2354^2 .

16000072 is a modest number, since divided by 72 gives 16 as remainder.

It is not an unprimeable number, because it can be changed into a prime (16000079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7297 + ... + 9232.

Almost surely, 2^16000072 is an apocalyptic number.

It is an amenable number.

16000072 is an abundant number, since it is smaller than the sum of its proper divisors (16977278).

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

16000072 is a wasteful number, since it uses less digits than its factorization.

16000072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16557 (or 16542 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 16000072 is about 4000.0089999899. The cubic root of 16000072 is about 251.9845879547.

The spelling of 16000072 in words is "sixteen million, seventy-two", and thus it is an aban number and an uban number.