20367812 has 6 divisors (see below), whose sum is σ = 35643678. Its totient is φ = 10183904.

The previous prime is 20367757. The next prime is 20367817. The reversal of 20367812 is 21876302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20286016 + 81796 = 4504^2 + 286^2 .

It is not an unprimeable number, because it can be changed into a prime (20367817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2545973 + ... + 2545980.

It is an arithmetic number, because the mean of its divisors is an integer number (5940613).

Almost surely, 2^20367812 is an apocalyptic number.

It is an amenable number.

20367812 is a deficient number, since it is larger than the sum of its proper divisors (15275866).

20367812 is a wasteful number, since it uses less digits than its factorization.

20367812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5091957 (or 5091955 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 20367812 is about 4513.0712380817. The cubic root of 20367812 is about 273.0956563001.

The spelling of 20367812 in words is "twenty million, three hundred sixty-seven thousand, eight hundred twelve".