21433962 has 16 divisors (see below), whose sum is σ = 46765152. Its totient is φ = 6495120.

The previous prime is 21433961. The next prime is 21433967. The reversal of 21433962 is 26933412.

It is not an unprimeable number, because it can be changed into a prime (21433961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162313 + ... + 162444.

It is an arithmetic number, because the mean of its divisors is an integer number (2922822).

Almost surely, 2^21433962 is an apocalyptic number.

21433962 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21433962 is an abundant number, since it is smaller than the sum of its proper divisors (25331190).

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

21433962 is a wasteful number, since it uses less digits than its factorization.

21433962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324773.

The product of its digits is 7776, while the sum is 30.

The square root of 21433962 is about 4629.6827105105. The cubic root of 21433962 is about 277.7799010090.

It can be divided in two parts, 2143 and 3962, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 21433962 in words is "twenty-one million, four hundred thirty-three thousand, nine hundred sixty-two".