21254302 has 8 divisors (see below), whose sum is σ = 31915800. Its totient is φ = 10615704.

The previous prime is 21254297. The next prime is 21254309. The reversal of 21254302 is 20345212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21254302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21254309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3177 + ... + 7252.

It is an arithmetic number, because the mean of its divisors is an integer number (3989475).

Almost surely, 2^21254302 is an apocalyptic number.

21254302 is a deficient number, since it is larger than the sum of its proper divisors (10661498).

21254302 is a wasteful number, since it uses less digits than its factorization.

21254302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11450.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 21254302 is about 4610.2388224473. The cubic root of 21254302 is about 277.0016030352.

Adding to 21254302 its reverse (20345212), we get a palindrome (41599514).

The spelling of 21254302 in words is "twenty-one million, two hundred fifty-four thousand, three hundred two".