20234428 has 12 divisors (see below), whose sum is σ = 35859040. Its totient is φ = 9988992.

The previous prime is 20234387. The next prime is 20234429. The reversal of 20234428 is 82443202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20234429) 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 3 ways as a sum of consecutive naturals, for example, 31701 + ... + 32332.

Almost surely, 2^20234428 is an apocalyptic number.

It is an amenable number.

20234428 is a deficient number, since it is larger than the sum of its proper divisors (15624612).

20234428 is a wasteful number, since it uses less digits than its factorization.

20234428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64116 (or 64114 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 20234428 is about 4498.2694450199. The cubic root of 20234428 is about 272.4982038431.

The spelling of 20234428 in words is "twenty million, two hundred thirty-four thousand, four hundred twenty-eight".