16440130 has 64 divisors (see below), whose sum is σ = 36495360. Its totient is φ = 5206464.

The previous prime is 16440119. The next prime is 16440131. The reversal of 16440130 is 3104461.

It is a happy number.

It is a super-3 number, since 3×16440130³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 16440098 and 16440107.

It is not an unprimeable number, because it can be changed into a prime (16440131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62379 + ... + 62641.

It is an arithmetic number, because the mean of its divisors is an integer number (570240).

Almost surely, 2^16440130 is an apocalyptic number.

16440130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16440130 is an abundant number, since it is smaller than the sum of its proper divisors (20055230).

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

16440130 is a wasteful number, since it uses less digits than its factorization.

16440130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 16440130 is about 4054.6430175787. The cubic root of 16440130 is about 254.2738794607.

16440130 divided by its sum of digits (19) gives a triangular number (865270 = T₁₃₁₅).

Adding to 16440130 its reverse (3104461), we get a palindrome (19544591).

The spelling of 16440130 in words is "sixteen million, four hundred forty thousand, one hundred thirty".