16269138 has 12 divisors (see below), whose sum is σ = 35249838. Its totient is φ = 5423040.

The previous prime is 16269137. The next prime is 16269157. The reversal of 16269138 is 83196261.

It can be written as a sum of positive squares in only one way, i.e., 9903609 + 6365529 = 3147^2 + 2523^2 .

It is not an unprimeable number, because it can be changed into a prime (16269133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 451903 + ... + 451938.

Almost surely, 2^16269138 is an apocalyptic number.

16269138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16269138 is an abundant number, since it is smaller than the sum of its proper divisors (18980700).

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

16269138 is a wasteful number, since it uses less digits than its factorization.

16269138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903849 (or 903846 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 16269138 is about 4033.5019523982. The cubic root of 16269138 is about 253.3892470458.

The spelling of 16269138 in words is "sixteen million, two hundred sixty-nine thousand, one hundred thirty-eight".