21869076 has 24 divisors (see below), whose sum is σ = 53714080. Its totient is φ = 6905952.

The previous prime is 21869059. The next prime is 21869077. The reversal of 21869076 is 67096812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21869077) 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 7 ways as a sum of consecutive naturals, for example, 47731 + ... + 48186.

Almost surely, 2^21869076 is an apocalyptic number.

It is an amenable number.

21869076 is an abundant number, since it is smaller than the sum of its proper divisors (31845004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21869076 is a wasteful number, since it uses less digits than its factorization.

21869076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95943 (or 95941 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 21869076 is about 4676.4383883464. The cubic root of 21869076 is about 279.6469870951.

The spelling of 21869076 in words is "twenty-one million, eight hundred sixty-nine thousand, seventy-six".