20193812 has 24 divisors (see below), whose sum is σ = 36832320. Its totient is φ = 9679040.

The previous prime is 20193799. The next prime is 20193863. The reversal of 20193812 is 21839102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8633 + ... + 10719.

It is an arithmetic number, because the mean of its divisors is an integer number (1534680).

Almost surely, 2^20193812 is an apocalyptic number.

It is an amenable number.

20193812 is a deficient number, since it is larger than the sum of its proper divisors (16638508).

20193812 is a wasteful number, since it uses less digits than its factorization.

20193812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 20193812 is about 4493.7525521550. The cubic root of 20193812 is about 272.3157557127.

The spelling of 20193812 in words is "twenty million, one hundred ninety-three thousand, eight hundred twelve".