16293140 has 48 divisors (see below), whose sum is σ = 36569232. Its totient is φ = 6076416.

The previous prime is 16293139. The next prime is 16293143. The reversal of 16293140 is 4139261.

16293140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 309136 + 15984004 = 556^2 + 3998^2 .

It is a super-2 number, since 2×16293140² = 530932822119200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16293143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58682 + ... + 58958.

It is an arithmetic number, because the mean of its divisors is an integer number (761859).

Almost surely, 2^16293140 is an apocalyptic number.

16293140 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 16293140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18284616).

16293140 is an abundant number, since it is smaller than the sum of its proper divisors (20276092).

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

16293140 is a wasteful number, since it uses less digits than its factorization.

16293140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 16293140 is about 4036.4761859820. The cubic root of 16293140 is about 253.5137949329.

The spelling of 16293140 in words is "sixteen million, two hundred ninety-three thousand, one hundred forty".