21498796 has 36 divisors (see below), whose sum is σ = 42356776. Its totient is φ = 9535680.

The previous prime is 21498793. The next prime is 21498797. The reversal of 21498796 is 69789412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21498793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20296 + ... + 21328.

Almost surely, 2^21498796 is an apocalyptic number.

It is an amenable number.

21498796 is a deficient number, since it is larger than the sum of its proper divisors (20857980).

21498796 is a wasteful number, since it uses less digits than its factorization.

21498796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102 (or 1089 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The square root of 21498796 is about 4636.6794152712. The cubic root of 21498796 is about 278.0596976846.

The spelling of 21498796 in words is "twenty-one million, four hundred ninety-eight thousand, seven hundred ninety-six".