20267442 has 32 divisors (see below), whose sum is σ = 48504960. Its totient is φ = 6235920.

The previous prime is 20267441. The next prime is 20267473. The reversal of 20267442 is 24476202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20267441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13734 + ... + 15137.

It is an arithmetic number, because the mean of its divisors is an integer number (1515780).

Almost surely, 2^20267442 is an apocalyptic number.

20267442 is an abundant number, since it is smaller than the sum of its proper divisors (28237518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20267442 is a wasteful number, since it uses less digits than its factorization.

20267442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28895 (or 28889 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 20267442 is about 4501.9375828636. The cubic root of 20267442 is about 272.6463237939.

The spelling of 20267442 in words is "twenty million, two hundred sixty-seven thousand, four hundred forty-two".