16145388 has 72 divisors (see below), whose sum is σ = 47290880. Its totient is φ = 4548960.

The previous prime is 16145369. The next prime is 16145411. The reversal of 16145388 is 88354161.

16145388 is a `hidden beast` number, since 1 + 614 + 5 + 38 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19503 + ... + 20313.

Almost surely, 2^16145388 is an apocalyptic number.

16145388 is a gapful number since it is divisible by the number (18) 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 16145388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23645440).

16145388 is an abundant number, since it is smaller than the sum of its proper divisors (31145492).

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

16145388 is a wasteful number, since it uses less digits than its factorization.

16145388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907 (or 902 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 16145388 is about 4018.1324019997. The cubic root of 16145388 is about 252.7451489646.

The spelling of 16145388 in words is "sixteen million, one hundred forty-five thousand, three hundred eighty-eight".