21376132 has 24 divisors (see below), whose sum is σ = 39029760. Its totient is φ = 10231200.

The previous prime is 21376093. The next prime is 21376133. The reversal of 21376132 is 23167312.

It is a junction number, because it is equal to n+sod(n) for n = 21376097 and 21376106.

It is not an unprimeable number, because it can be changed into a prime (21376133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14007 + ... + 15457.

It is an arithmetic number, because the mean of its divisors is an integer number (1626240).

Almost surely, 2^21376132 is an apocalyptic number.

It is an amenable number.

21376132 is a deficient number, since it is larger than the sum of its proper divisors (17653628).

21376132 is a wasteful number, since it uses less digits than its factorization.

21376132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611 (or 1609 counting only the distinct ones).

The product of its digits is 1512, while the sum is 25.

The square root of 21376132 is about 4623.4329237051. The cubic root of 21376132 is about 277.5298542131.

The spelling of 21376132 in words is "twenty-one million, three hundred seventy-six thousand, one hundred thirty-two".