20247874 has 8 divisors (see below), whose sum is σ = 30672828. Its totient is φ = 10023600.

The previous prime is 20247853. The next prime is 20247881. The reversal of 20247874 is 47874202.

It can be written as a sum of positive squares in 2 ways, for example, as 20205025 + 42849 = 4495^2 + 207^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49917 + ... + 50320.

Almost surely, 2^20247874 is an apocalyptic number.

20247874 is a deficient number, since it is larger than the sum of its proper divisors (10424954).

20247874 is a wasteful number, since it uses less digits than its factorization.

20247874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100340.

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 20247874 is about 4499.7637715773. The cubic root of 20247874 is about 272.5585498296.

The spelling of 20247874 in words is "twenty million, two hundred forty-seven thousand, eight hundred seventy-four".