21151362 has 16 divisors (see below), whose sum is σ = 43667712. Its totient is φ = 6822960.

The previous prime is 21151343. The next prime is 21151433. The reversal of 21151362 is 26315112.

It is a super-2 number, since 2×21151362² = 894760228910088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56673 + ... + 57044.

It is an arithmetic number, because the mean of its divisors is an integer number (2729232).

Almost surely, 2^21151362 is an apocalyptic number.

21151362 is an abundant number, since it is smaller than the sum of its proper divisors (22516350).

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

21151362 is a wasteful number, since it uses less digits than its factorization.

21151362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113753.

The product of its digits is 360, while the sum is 21.

The square root of 21151362 is about 4599.0609911155. The cubic root of 21151362 is about 276.5536826772.

Adding to 21151362 its reverse (26315112), we get a palindrome (47466474).

It can be divided in two parts, 211513 and 62, that added together give a triangular number (211575 = T₆₅₀).

The spelling of 21151362 in words is "twenty-one million, one hundred fifty-one thousand, three hundred sixty-two".