16801400 has 96 divisors (see below), whose sum is σ = 48746880. Its totient is φ = 5232000.

The previous prime is 16801399. The next prime is 16801409. The reversal of 16801400 is 410861.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16801409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14855 + ... + 15945.

It is an arithmetic number, because the mean of its divisors is an integer number (507780).

Almost surely, 2^16801400 is an apocalyptic number.

16801400 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 16801400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24373440).

16801400 is an abundant number, since it is smaller than the sum of its proper divisors (31945480).

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

16801400 is a wasteful number, since it uses less digits than its factorization.

16801400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125 (or 1116 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 16801400 is about 4098.9510853388. The cubic root of 16801400 is about 256.1229471286.

The spelling of 16801400 in words is "sixteen million, eight hundred one thousand, four hundred".