20324890 has 8 divisors (see below), whose sum is σ = 36584820. Its totient is φ = 8129952.

The previous prime is 20324881. The next prime is 20324891. The reversal of 20324890 is 9842302.

It can be written as a sum of positive squares in 2 ways, for example, as 19775809 + 549081 = 4447^2 + 741^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20324891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1016235 + ... + 1016254.

Almost surely, 2^20324890 is an apocalyptic number.

20324890 is a deficient number, since it is larger than the sum of its proper divisors (16259930).

20324890 is a wasteful number, since it uses less digits than its factorization.

20324890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032496.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 20324890 is about 4508.3134318723. The cubic root of 20324890 is about 272.9036858293.

The spelling of 20324890 in words is "twenty million, three hundred twenty-four thousand, eight hundred ninety".