20254678 has 4 divisors (see below), whose sum is σ = 30382020. Its totient is φ = 10127338.

The previous prime is 20254669. The next prime is 20254679. The reversal of 20254678 is 87645202.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20254679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5063668 + ... + 5063671.

It is an arithmetic number, because the mean of its divisors is an integer number (7595505).

Almost surely, 2^20254678 is an apocalyptic number.

20254678 is a deficient number, since it is larger than the sum of its proper divisors (10127342).

20254678 is a wasteful number, since it uses less digits than its factorization.

20254678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10127341.

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

The square root of 20254678 is about 4500.5197477625. The cubic root of 20254678 is about 272.5890761733.

The spelling of 20254678 in words is "twenty million, two hundred fifty-four thousand, six hundred seventy-eight".