21233192 has 8 divisors (see below), whose sum is σ = 39812250. Its totient is φ = 10616592.

The previous prime is 21233183. The next prime is 21233197. The reversal of 21233192 is 29133212.

It can be written as a sum of positive squares in only one way, i.e., 21215236 + 17956 = 4606^2 + 134^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (21233197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1327067 + ... + 1327082.

Almost surely, 2^21233192 is an apocalyptic number.

It is an amenable number.

21233192 is a deficient number, since it is larger than the sum of its proper divisors (18579058).

21233192 is a wasteful number, since it uses less digits than its factorization.

21233192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2654155 (or 2654151 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

The square root of 21233192 is about 4607.9487844376. The cubic root of 21233192 is about 276.9098656724.

The spelling of 21233192 in words is "twenty-one million, two hundred thirty-three thousand, one hundred ninety-two".