20268502 has 4 divisors (see below), whose sum is σ = 30402756. Its totient is φ = 10134250.

The previous prime is 20268499. The next prime is 20268503. The reversal of 20268502 is 20586202.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20268503) by changing a digit.

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 as a sum of consecutive naturals, namely, 5067124 + ... + 5067127.

It is an arithmetic number, because the mean of its divisors is an integer number (7600689).

Almost surely, 2^20268502 is an apocalyptic number.

20268502 is a deficient number, since it is larger than the sum of its proper divisors (10134254).

20268502 is a wasteful number, since it uses less digits than its factorization.

20268502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10134253.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 20268502 is about 4502.0553084119. The cubic root of 20268502 is about 272.6510769026.

The spelling of 20268502 in words is "twenty million, two hundred sixty-eight thousand, five hundred two".