20381126 has 4 divisors (see below), whose sum is σ = 30571692. Its totient is φ = 10190562.

The previous prime is 20381107. The next prime is 20381149. The reversal of 20381126 is 62118302.

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

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, 5095280 + ... + 5095283.

It is an arithmetic number, because the mean of its divisors is an integer number (7642923).

Almost surely, 2^20381126 is an apocalyptic number.

20381126 is a deficient number, since it is larger than the sum of its proper divisors (10190566).

20381126 is a wasteful number, since it uses less digits than its factorization.

20381126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10190565.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 20381126 is about 4514.5460458389. The cubic root of 20381126 is about 273.1551489217.

Adding to 20381126 its reverse (62118302), we get a palindrome (82499428).

The spelling of 20381126 in words is "twenty million, three hundred eighty-one thousand, one hundred twenty-six".