16464228 has 144 divisors (see below), whose sum is σ = 48263040. Its totient is φ = 4336640.

The previous prime is 16464187. The next prime is 16464229. The reversal of 16464228 is 82246461.

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

It is not an unprimeable number, because it can be changed into a prime (16464229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 567718 + ... + 567746.

It is an arithmetic number, because the mean of its divisors is an integer number (335160).

Almost surely, 2^16464228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16464228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24131520).

16464228 is an abundant number, since it is smaller than the sum of its proper divisors (31798812).

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

16464228 is a wasteful number, since it uses less digits than its factorization.

16464228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 85 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 16464228 is about 4057.6135843621. The cubic root of 16464228 is about 254.3980573207.

The spelling of 16464228 in words is "sixteen million, four hundred sixty-four thousand, two hundred twenty-eight".