20245678 has 8 divisors (see below), whose sum is σ = 31966920. Its totient is φ = 9590040.

The previous prime is 20245669. The next prime is 20245679. The reversal of 20245678 is 87654202.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20245679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266353 + ... + 266428.

It is an arithmetic number, because the mean of its divisors is an integer number (3995865).

Almost surely, 2^20245678 is an apocalyptic number.

20245678 is a deficient number, since it is larger than the sum of its proper divisors (11721242).

20245678 is a wasteful number, since it uses less digits than its factorization.

20245678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532802.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 20245678 is about 4499.5197521513. The cubic root of 20245678 is about 272.5486959520.

The spelling of 20245678 in words is "twenty million, two hundred forty-five thousand, six hundred seventy-eight".