20623874 has 8 divisors (see below), whose sum is σ = 31772028. Its totient is φ = 10033200.

The previous prime is 20623871. The next prime is 20623877. The reversal of 20623874 is 47832602.

It is an interprime number because it is at equal distance from previous prime (20623871) and next prime (20623877).

It can be written as a sum of positive squares in 2 ways, for example, as 15264649 + 5359225 = 3907^2 + 2315^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20623874.

It is not an unprimeable number, because it can be changed into a prime (20623871) 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, 139277 + ... + 139424.

Almost surely, 2^20623874 is an apocalyptic number.

20623874 is a deficient number, since it is larger than the sum of its proper divisors (11148154).

20623874 is a wasteful number, since it uses less digits than its factorization.

20623874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278740.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 20623874 is about 4541.3515609343. The cubic root of 20623874 is about 274.2353369109.

The spelling of 20623874 in words is "twenty million, six hundred twenty-three thousand, eight hundred seventy-four".