16345740 has 48 divisors (see below), whose sum is σ = 46297440. Its totient is φ = 4308480.

The previous prime is 16345733. The next prime is 16345753. The reversal of 16345740 is 4754361.

It is a super-2 number, since 2×16345740² = 534366432295200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 16345698 and 16345707.

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 15 ways as a sum of consecutive naturals, for example, 3810 + ... + 6870.

It is an arithmetic number, because the mean of its divisors is an integer number (964530).

Almost surely, 2^16345740 is an apocalyptic number.

16345740 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 16345740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23148720).

16345740 is an abundant number, since it is smaller than the sum of its proper divisors (29951700).

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

16345740 is a wasteful number, since it uses less digits than its factorization.

16345740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3162 (or 3160 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 16345740 is about 4042.9865198885. The cubic root of 16345740 is about 253.7863125171.

The spelling of 16345740 in words is "sixteen million, three hundred forty-five thousand, seven hundred forty".