21445362 has 12 divisors (see below), whose sum is σ = 46464990. Its totient is φ = 7148448.

The previous prime is 21445349. The next prime is 21445373. The reversal of 21445362 is 26354412.

It can be written as a sum of positive squares in only one way, i.e., 21261321 + 184041 = 4611^2 + 429^2 .

It is a super-2 number, since 2×21445362² = 919807102622088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 595687 + ... + 595722.

Almost surely, 2^21445362 is an apocalyptic number.

21445362 is an abundant number, since it is smaller than the sum of its proper divisors (25019628).

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

21445362 is a wasteful number, since it uses less digits than its factorization.

21445362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191417 (or 1191414 counting only the distinct ones).

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

The square root of 21445362 is about 4630.9137327314. The cubic root of 21445362 is about 277.8291395277.

Adding to 21445362 its reverse (26354412), we get a palindrome (47799774).

The spelling of 21445362 in words is "twenty-one million, four hundred forty-five thousand, three hundred sixty-two".