21482345 has 16 divisors (see below), whose sum is σ = 27025920. Its totient is φ = 16361664.

The previous prime is 21482303. The next prime is 21482353. The reversal of 21482345 is 54328412.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21482345 - 2⁶ = 21482281 is a prime.

It is a super-2 number, since 2×21482345² = 922982293398050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41951 + ... + 42459.

It is an arithmetic number, because the mean of its divisors is an integer number (1689120).

Almost surely, 2^21482345 is an apocalyptic number.

It is an amenable number.

21482345 is a deficient number, since it is larger than the sum of its proper divisors (5543575).

21482345 is a wasteful number, since it uses less digits than its factorization.

21482345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904.

The product of its digits is 7680, while the sum is 29.

The square root of 21482345 is about 4634.9050691465. The cubic root of 21482345 is about 277.9887553032.

The spelling of 21482345 in words is "twenty-one million, four hundred eighty-two thousand, three hundred forty-five".