16135400 has 24 divisors (see below), whose sum is σ = 37515270. Its totient is φ = 6454080.

The previous prime is 16135393. The next prime is 16135411. The reversal of 16135400 is 453161.

It can be written as a sum of positive squares in 3 ways, for example, as 8726116 + 7409284 = 2954^2 + 2722^2 .

It is a super-2 number, since 2×16135400² = 520702266320000, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40139 + ... + 40538.

Almost surely, 2^16135400 is an apocalyptic number.

16135400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16135400 is an abundant number, since it is smaller than the sum of its proper divisors (21379870).

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

16135400 is a wasteful number, since it uses less digits than its factorization.

16135400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80693 (or 80684 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 16135400 is about 4016.8893437584. The cubic root of 16135400 is about 252.6930197480.

Adding to 16135400 its reverse (453161), we get a palindrome (16588561).

The spelling of 16135400 in words is "sixteen million, one hundred thirty-five thousand, four hundred".