16328280 has 32 divisors (see below), whose sum is σ = 48985200. Its totient is φ = 4354176.

The previous prime is 16328269. The next prime is 16328287. The reversal of 16328280 is 8282361.

16328280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16328280² = 533225455516800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16328287) 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, 67915 + ... + 68154.

Almost surely, 2^16328280 is an apocalyptic number.

16328280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16328280 is an abundant number, since it is smaller than the sum of its proper divisors (32656920).

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

16328280 is a wasteful number, since it uses less digits than its factorization.

16328280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136083 (or 136079 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 16328280 is about 4040.8266481006. The cubic root of 16328280 is about 253.6959181661.

The spelling of 16328280 in words is "sixteen million, three hundred twenty-eight thousand, two hundred eighty".