20407874 has 8 divisors (see below), whose sum is σ = 30980880. Its totient is φ = 10080916.

The previous prime is 20407867. The next prime is 20407883. The reversal of 20407874 is 47870402.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20407874.

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, 61304 + ... + 61635.

It is an arithmetic number, because the mean of its divisors is an integer number (3872610).

Almost surely, 2^20407874 is an apocalyptic number.

20407874 is a deficient number, since it is larger than the sum of its proper divisors (10573006).

20407874 is a wasteful number, since it uses less digits than its factorization.

20407874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123024.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 20407874 is about 4517.5074986103. The cubic root of 20407874 is about 273.2745921096.

The spelling of 20407874 in words is "twenty million, four hundred seven thousand, eight hundred seventy-four".