16274440 has 128 divisors (see below), whose sum is σ = 47900160. Its totient is φ = 4829184.

The previous prime is 16274437. The next prime is 16274441. The reversal of 16274440 is 4447261.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 16274399 and 16274408.

It is not an unprimeable number, because it can be changed into a prime (16274441) 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, 61749 + ... + 62011.

It is an arithmetic number, because the mean of its divisors is an integer number (374220).

Almost surely, 2^16274440 is an apocalyptic number.

16274440 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 16274440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23950080).

16274440 is an abundant number, since it is smaller than the sum of its proper divisors (31625720).

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

16274440 is a wasteful number, since it uses less digits than its factorization.

16274440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 16274440 is about 4034.1591441092. The cubic root of 16274440 is about 253.4167699928.

The spelling of 16274440 in words is "sixteen million, two hundred seventy-four thousand, four hundred forty".