21892036 has 12 divisors (see below), whose sum is σ = 39126528. Its totient is φ = 10713032.

The previous prime is 21892033. The next prime is 21892037. The reversal of 21892036 is 63029812.

It is a super-2 number, since 2×21892036² = 958522480450592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21891989 and 21892007.

It is not an unprimeable number, because it can be changed into a prime (21892033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58036 + ... + 58411.

It is an arithmetic number, because the mean of its divisors is an integer number (3260544).

Almost surely, 2^21892036 is an apocalyptic number.

It is an amenable number.

21892036 is a deficient number, since it is larger than the sum of its proper divisors (17234492).

21892036 is a wasteful number, since it uses less digits than its factorization.

21892036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116498 (or 116496 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 21892036 is about 4678.8926040250. The cubic root of 21892036 is about 279.7448185283.

It can be divided in two parts, 2189 and 2036, that added together give a square (4225 = 65²).

The spelling of 21892036 in words is "twenty-one million, eight hundred ninety-two thousand, thirty-six".