20256235 has 8 divisors (see below), whose sum is σ = 24332256. Its totient is φ = 16188480.

The previous prime is 20256227. The next prime is 20256251. The reversal of 20256235 is 53265202.

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

It is not a de Polignac number, because 20256235 - 2³ = 20256227 is a prime.

It is a super-3 number, since 3×20256235³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6775 + ... + 9295.

It is an arithmetic number, because the mean of its divisors is an integer number (3041532).

Almost surely, 2^20256235 is an apocalyptic number.

20256235 is a deficient number, since it is larger than the sum of its proper divisors (4076021).

20256235 is a wasteful number, since it uses less digits than its factorization.

20256235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4133.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 20256235 is about 4500.6927244592. The cubic root of 20256235 is about 272.5960607379.

The spelling of 20256235 in words is "twenty million, two hundred fifty-six thousand, two hundred thirty-five".