21454362 has 16 divisors (see below), whose sum is σ = 47676480. Its totient is φ = 7151436.

The previous prime is 21454333. The next prime is 21454373. The reversal of 21454362 is 26345412.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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, 198598 + ... + 198705.

It is an arithmetic number, because the mean of its divisors is an integer number (2979780).

Almost surely, 2^21454362 is an apocalyptic number.

21454362 is an abundant number, since it is smaller than the sum of its proper divisors (26222118).

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

21454362 is a wasteful number, since it uses less digits than its factorization.

21454362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397314 (or 397308 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 21454362 is about 4631.8853612757. The cubic root of 21454362 is about 277.8679997180.

Adding to 21454362 its reverse (26345412), we get a palindrome (47799774).

The spelling of 21454362 in words is "twenty-one million, four hundred fifty-four thousand, three hundred sixty-two".