21232060 has 24 divisors (see below), whose sum is σ = 46126080. Its totient is φ = 8199744.

The previous prime is 21232049. The next prime is 21232073. The reversal of 21232060 is 6023212.

It is a congruent number.

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, 17724 + ... + 18883.

It is an arithmetic number, because the mean of its divisors is an integer number (1921920).

Almost surely, 2^21232060 is an apocalyptic number.

21232060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21232060 is an abundant number, since it is smaller than the sum of its proper divisors (24894020).

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

21232060 is a wasteful number, since it uses less digits than its factorization.

21232060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36645 (or 36643 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 21232060 is about 4607.8259515741. The cubic root of 21232060 is about 276.9049446421.

Adding to 21232060 its reverse (6023212), we get a palindrome (27255272).

The spelling of 21232060 in words is "twenty-one million, two hundred thirty-two thousand, sixty".