21441354 has 16 divisors (see below), whose sum is σ = 46781280. Its totient is φ = 6497360.

The previous prime is 21441347. The next prime is 21441373. The reversal of 21441354 is 45314412.

It is a super-2 number, since 2×21441354² = 919463322706632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162369 + ... + 162500.

It is an arithmetic number, because the mean of its divisors is an integer number (2923830).

Almost surely, 2^21441354 is an apocalyptic number.

21441354 is an abundant number, since it is smaller than the sum of its proper divisors (25339926).

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

21441354 is a wasteful number, since it uses less digits than its factorization.

21441354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324885.

The product of its digits is 1920, while the sum is 24.

The square root of 21441354 is about 4630.4809685388. The cubic root of 21441354 is about 277.8118302905.

Adding to 21441354 its reverse (45314412), we get a palindrome (66755766).

The spelling of 21441354 in words is "twenty-one million, four hundred forty-one thousand, three hundred fifty-four".