20620874 has 8 divisors (see below), whose sum is σ = 31589568. Its totient is φ = 10091020.

The previous prime is 20620861. The next prime is 20620879. The reversal of 20620874 is 47802602.

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

It is not an unprimeable number, because it can be changed into a prime (20620879) 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, 109592 + ... + 109779.

It is an arithmetic number, because the mean of its divisors is an integer number (3948696).

Almost surely, 2^20620874 is an apocalyptic number.

20620874 is a deficient number, since it is larger than the sum of its proper divisors (10968694).

20620874 is a wasteful number, since it uses less digits than its factorization.

20620874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219420.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 20620874 is about 4541.0212507761. The cubic root of 20620874 is about 274.2220392814. Note that the first 3 decimals are identical.

The spelling of 20620874 in words is "twenty million, six hundred twenty thousand, eight hundred seventy-four".