21965082 has 8 divisors (see below), whose sum is σ = 43930176. Its totient is φ = 7321692.

The previous prime is 21965077. The next prime is 21965101. The reversal of 21965082 is 28056912.

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

21965082 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1830418 + ... + 1830429.

It is an arithmetic number, because the mean of its divisors is an integer number (5491272).

Almost surely, 2^21965082 is an apocalyptic number.

21965082 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21965082 is a wasteful number, since it uses less digits than its factorization.

21965082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660852.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 21965082 is about 4686.6920103630. The cubic root of 21965082 is about 280.0556097031.

The spelling of 21965082 in words is "twenty-one million, nine hundred sixty-five thousand, eighty-two".