20512854 has 48 divisors (see below), whose sum is σ = 45922032. Its totient is φ = 6614784.

The previous prime is 20512847. The next prime is 20512861. The reversal of 20512854 is 45821502.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20512847) and next prime (20512861).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87922 + ... + 88154.

It is an arithmetic number, because the mean of its divisors is an integer number (956709).

Almost surely, 2^20512854 is an apocalyptic number.

20512854 is an abundant number, since it is smaller than the sum of its proper divisors (25409178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20512854 is a wasteful number, since it uses less digits than its factorization.

20512854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 20512854 is about 4529.1118334614. Note that the first 3 decimals coincide. The cubic root of 20512854 is about 273.7423742168.

The spelling of 20512854 in words is "twenty million, five hundred twelve thousand, eight hundred fifty-four".