20250399 has 32 divisors (see below), whose sum is σ = 30227904. Its totient is φ = 11980800.

The previous prime is 20250389. The next prime is 20250401. The reversal of 20250399 is 99305202.

It is not a de Polignac number, because 20250399 - 2⁵ = 20250367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20250379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200449 + ... + 200549.

It is an arithmetic number, because the mean of its divisors is an integer number (944622).

Almost surely, 2^20250399 is an apocalyptic number.

20250399 is a deficient number, since it is larger than the sum of its proper divisors (9977505).

20250399 is a wasteful number, since it uses less digits than its factorization.

20250399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 20250399 is about 4500.0443331150. The cubic root of 20250399 is about 272.5698791134.

The spelling of 20250399 in words is "twenty million, two hundred fifty thousand, three hundred ninety-nine".