21033492 has 24 divisors (see below), whose sum is σ = 50276352. Its totient is φ = 6840000.

The previous prime is 21033479. The next prime is 21033517. The reversal of 21033492 is 29433012.

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, 20884 + ... + 21867.

It is an arithmetic number, because the mean of its divisors is an integer number (2094848).

Almost surely, 2^21033492 is an apocalyptic number.

It is an amenable number.

21033492 is an abundant number, since it is smaller than the sum of its proper divisors (29242860).

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

21033492 is a wasteful number, since it uses less digits than its factorization.

21033492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42799 (or 42797 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 21033492 is about 4586.2285158941. The cubic root of 21033492 is about 276.0390093990.

The spelling of 21033492 in words is "twenty-one million, thirty-three thousand, four hundred ninety-two".