20381254 has 4 divisors (see below), whose sum is σ = 30571884. Its totient is φ = 10190626.

The previous prime is 20381237. The next prime is 20381261. The reversal of 20381254 is 45218302.

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

It is a super-2 number, since 2×20381254² = 830791029225032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5095312 + ... + 5095315.

It is an arithmetic number, because the mean of its divisors is an integer number (7642971).

Almost surely, 2^20381254 is an apocalyptic number.

20381254 is a deficient number, since it is larger than the sum of its proper divisors (10190630).

20381254 is a wasteful number, since it uses less digits than its factorization.

20381254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10190629.

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

The square root of 20381254 is about 4514.5602222143. The cubic root of 20381254 is about 273.1557207545.

Adding to 20381254 its reverse (45218302), we get a palindrome (65599556).

The spelling of 20381254 in words is "twenty million, three hundred eighty-one thousand, two hundred fifty-four".