21036162 has 16 divisors (see below), whose sum is σ = 48082752. Its totient is φ = 6010320.

The previous prime is 21036151. The next prime is 21036163. The reversal of 21036162 is 26163012.

It is a happy number.

It is a super-2 number, since 2×21036162² = 885040223380488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (21036163) 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, 250389 + ... + 250472.

It is an arithmetic number, because the mean of its divisors is an integer number (3005172).

Almost surely, 2^21036162 is an apocalyptic number.

21036162 is an abundant number, since it is smaller than the sum of its proper divisors (27046590).

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

21036162 is a wasteful number, since it uses less digits than its factorization.

21036162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500873.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 21036162 is about 4586.5195955103. The cubic root of 21036162 is about 276.0506890728.

Adding to 21036162 its reverse (26163012), we get a palindrome (47199174).

The spelling of 21036162 in words is "twenty-one million, thirty-six thousand, one hundred sixty-two".