16457320 has 64 divisors (see below), whose sum is σ = 40875840. Its totient is φ = 5913600.

The previous prime is 16457293. The next prime is 16457321. The reversal of 16457320 is 2375461.

It is not an unprimeable number, because it can be changed into a prime (16457321) 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, 49555 + ... + 49885.

It is an arithmetic number, because the mean of its divisors is an integer number (638685).

Almost surely, 2^16457320 is an apocalyptic number.

16457320 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 16457320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20437920).

16457320 is an abundant number, since it is smaller than the sum of its proper divisors (24418520).

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

16457320 is a wasteful number, since it uses less digits than its factorization.

16457320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 16457320 is about 4056.7622557897. The cubic root of 16457320 is about 254.3624725442.

The spelling of 16457320 in words is "sixteen million, four hundred fifty-seven thousand, three hundred twenty".