16287620 has 12 divisors (see below), whose sum is σ = 34204044. Its totient is φ = 6515040.

The previous prime is 16287587. The next prime is 16287629. The reversal of 16287620 is 2678261.

It can be written as a sum of positive squares in 2 ways, for example, as 3556996 + 12730624 = 1886^2 + 3568^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16287629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407171 + ... + 407210.

It is an arithmetic number, because the mean of its divisors is an integer number (2850337).

Almost surely, 2^16287620 is an apocalyptic number.

16287620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16287620 is an abundant number, since it is smaller than the sum of its proper divisors (17916424).

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

16287620 is a wasteful number, since it uses less digits than its factorization.

16287620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814390 (or 814388 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 16287620 is about 4035.7923633408. The cubic root of 16287620 is about 253.4851621420.

The spelling of 16287620 in words is "sixteen million, two hundred eighty-seven thousand, six hundred twenty".