21375462 has 8 divisors (see below), whose sum is σ = 42750936. Its totient is φ = 7125152.

The previous prime is 21375457. The next prime is 21375481. The reversal of 21375462 is 26457312.

It is a sphenic number, since it is the product of 3 distinct primes.

21375462 is an admirable number.

It is a super-3 number, since 3×21375462³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1781283 + ... + 1781294.

It is an arithmetic number, because the mean of its divisors is an integer number (5343867).

Almost surely, 2^21375462 is an apocalyptic number.

21375462 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21375462 is a wasteful number, since it uses less digits than its factorization.

21375462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562582.

The product of its digits is 10080, while the sum is 30.

The square root of 21375462 is about 4623.3604661545. The cubic root of 21375462 is about 277.5269546092.

The spelling of 21375462 in words is "twenty-one million, three hundred seventy-five thousand, four hundred sixty-two".