20258432 has 16 divisors (see below), whose sum is σ = 40358850. Its totient is φ = 10129152.

The previous prime is 20258401. The next prime is 20258437. The reversal of 20258432 is 23485202.

It can be written as a sum of positive squares in only one way, i.e., 17774656 + 2483776 = 4216^2 + 1576^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (20258437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79007 + ... + 79262.

Almost surely, 2^20258432 is an apocalyptic number.

It is an amenable number.

20258432 is a deficient number, since it is larger than the sum of its proper divisors (20100418).

20258432 is an equidigital number, since it uses as much as digits as its factorization.

20258432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158283 (or 158271 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 20258432 is about 4500.9367913802. The cubic root of 20258432 is about 272.6059156771.

The spelling of 20258432 in words is "twenty million, two hundred fifty-eight thousand, four hundred thirty-two".