16229140 has 12 divisors (see below), whose sum is σ = 34081236. Its totient is φ = 6491648.

The previous prime is 16229137. The next prime is 16229219. The reversal of 16229140 is 4192261.

It can be written as a sum of positive squares in 2 ways, for example, as 5588496 + 10640644 = 2364^2 + 3262^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 405709 + ... + 405748.

It is an arithmetic number, because the mean of its divisors is an integer number (2840103).

Almost surely, 2^16229140 is an apocalyptic number.

16229140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16229140 is an abundant number, since it is smaller than the sum of its proper divisors (17852096).

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

16229140 is a wasteful number, since it uses less digits than its factorization.

16229140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811466 (or 811464 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 16229140 is about 4028.5406787074. The cubic root of 16229140 is about 253.1814224678.

The spelling of 16229140 in words is "sixteen million, two hundred twenty-nine thousand, one hundred forty".