21362046 has 16 divisors (see below), whose sum is σ = 42772224. Its totient is φ = 7112664.

The previous prime is 21362041. The next prime is 21362057. The reversal of 21362046 is 64026312.

It is a super-2 number, since 2×21362046² = 912674018612232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21362041) 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, 6621 + ... + 9303.

It is an arithmetic number, because the mean of its divisors is an integer number (2673264).

Almost surely, 2^21362046 is an apocalyptic number.

21362046 is an abundant number, since it is smaller than the sum of its proper divisors (21410178).

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

21362046 is a wasteful number, since it uses less digits than its factorization.

21362046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 21362046 is about 4621.9093457142. The cubic root of 21362046 is about 277.4688805295.

Adding to 21362046 its reverse (64026312), we get a palindrome (85388358).

The spelling of 21362046 in words is "twenty-one million, three hundred sixty-two thousand, forty-six".