16229540 has 24 divisors (see below), whose sum is σ = 34157760. Its totient is φ = 6477408.

The previous prime is 16229519. The next prime is 16229557. The reversal of 16229540 is 4592261.

It is a happy number.

It is a super-2 number, since 2×16229540² = 526795937223200, which contains 22 as substring.

It is a plaindrome in base 14.

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 7 ways as a sum of consecutive naturals, for example, 17201 + ... + 18119.

It is an arithmetic number, because the mean of its divisors is an integer number (1423240).

Almost surely, 2^16229540 is an apocalyptic number.

16229540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16229540 is an abundant number, since it is smaller than the sum of its proper divisors (17928220).

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

16229540 is a wasteful number, since it uses less digits than its factorization.

16229540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811 (or 1809 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 16229540 is about 4028.5903241705. The cubic root of 16229540 is about 253.1835025069.

The spelling of 16229540 in words is "sixteen million, two hundred twenty-nine thousand, five hundred forty".