16618272 has 48 divisors (see below), whose sum is σ = 47591712. Its totient is φ = 5035520.

The previous prime is 16618271. The next prime is 16618279. The reversal of 16618272 is 27281661.

16618272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (16618271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6813 + ... + 8924.

It is an arithmetic number, because the mean of its divisors is an integer number (991494).

Almost surely, 2^16618272 is an apocalyptic number.

16618272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16618272 is an abundant number, since it is smaller than the sum of its proper divisors (30973440).

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

16618272 is a wasteful number, since it uses less digits than its factorization.

16618272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15761 (or 15753 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 16618272 is about 4076.5514837912. The cubic root of 16618272 is about 255.1890025168.

The spelling of 16618272 in words is "sixteen million, six hundred eighteen thousand, two hundred seventy-two".