20526442 has 8 divisors (see below), whose sum is σ = 32128416. Its totient is φ = 9816972.

The previous prime is 20526431. The next prime is 20526449. The reversal of 20526442 is 24462502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20526449) 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 in 3 ways as a sum of consecutive naturals, for example, 223068 + ... + 223159.

It is an arithmetic number, because the mean of its divisors is an integer number (4016052).

Almost surely, 2^20526442 is an apocalyptic number.

20526442 is a deficient number, since it is larger than the sum of its proper divisors (11601974).

20526442 is a wasteful number, since it uses less digits than its factorization.

20526442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446252.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 20526442 is about 4530.6116584850. The cubic root of 20526442 is about 273.8028044617.

Adding to 20526442 its reverse (24462502), we get a palindrome (44988944).

The spelling of 20526442 in words is "twenty million, five hundred twenty-six thousand, four hundred forty-two".