21077322 has 16 divisors (see below), whose sum is σ = 48176832. Its totient is φ = 6022080.

The previous prime is 21077317. The next prime is 21077333. The reversal of 21077322 is 22377012.

It is a junction number, because it is equal to n+sod(n) for n = 21077292 and 21077301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250879 + ... + 250962.

It is an arithmetic number, because the mean of its divisors is an integer number (3011052).

Almost surely, 2^21077322 is an apocalyptic number.

21077322 is an abundant number, since it is smaller than the sum of its proper divisors (27099510).

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

21077322 is a wasteful number, since it uses less digits than its factorization.

21077322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501853.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 21077322 is about 4591.0044652559. The cubic root of 21077322 is about 276.2306148570.

The spelling of 21077322 in words is "twenty-one million, seventy-seven thousand, three hundred twenty-two".