21413080 has 32 divisors (see below), whose sum is σ = 51886800. Its totient is φ = 7906176.

The previous prime is 21413053. The next prime is 21413083. The reversal of 21413080 is 8031412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21413083) 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 in 7 ways as a sum of consecutive naturals, for example, 20070 + ... + 21109.

Almost surely, 2^21413080 is an apocalyptic number.

21413080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21413080 is an abundant number, since it is smaller than the sum of its proper divisors (30473720).

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

21413080 is a wasteful number, since it uses less digits than its factorization.

21413080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41203 (or 41199 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 21413080 is about 4627.4269308115. The cubic root of 21413080 is about 277.6896628369.

Adding to 21413080 its reverse (8031412), we get a palindrome (29444492).

The spelling of 21413080 in words is "twenty-one million, four hundred thirteen thousand, eighty".