20812074 has 8 divisors (see below), whose sum is σ = 41624160. Its totient is φ = 6937356.

The previous prime is 20812039. The next prime is 20812091. The reversal of 20812074 is 47021802.

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

20812074 is an admirable number.

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, 1734334 + ... + 1734345.

It is an arithmetic number, because the mean of its divisors is an integer number (5203020).

Almost surely, 2^20812074 is an apocalyptic number.

20812074 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20812074 is a wasteful number, since it uses less digits than its factorization.

20812074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3468684.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 20812074 is about 4562.0252081724. The cubic root of 20812074 is about 275.0669765239.

Adding to 20812074 its reverse (47021802), we get a palindrome (67833876).

The spelling of 20812074 in words is "twenty million, eight hundred twelve thousand, seventy-four".