21136076 has 24 divisors (see below), whose sum is σ = 40289760. Its totient is φ = 9643392.

The previous prime is 21136069. The next prime is 21136123. The reversal of 21136076 is 67063112.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 2345 + ... + 6911.

It is an arithmetic number, because the mean of its divisors is an integer number (1678740).

Almost surely, 2^21136076 is an apocalyptic number.

21136076 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21136076 is a deficient number, since it is larger than the sum of its proper divisors (19153684).

21136076 is a wasteful number, since it uses less digits than its factorization.

21136076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673 (or 4671 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 21136076 is about 4597.3988297732. The cubic root of 21136076 is about 276.4870452288.

Adding to 21136076 its reverse (67063112), we get a palindrome (88199188).

The spelling of 21136076 in words is "twenty-one million, one hundred thirty-six thousand, seventy-six".