21477322 has 8 divisors (see below), whose sum is σ = 32283072. Its totient is φ = 10716300.

The previous prime is 21477301. The next prime is 21477343. The reversal of 21477322 is 22377412.

It is an interprime number because it is at equal distance from previous prime (21477301) and next prime (21477343).

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

It is a super-2 number, since 2×21477322² = 922550720583368, which contains 22 as substring.

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, 9954 + ... + 11917.

It is an arithmetic number, because the mean of its divisors is an integer number (4035384).

Almost surely, 2^21477322 is an apocalyptic number.

21477322 is a deficient number, since it is larger than the sum of its proper divisors (10805750).

21477322 is a wasteful number, since it uses less digits than its factorization.

21477322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22364.

The product of its digits is 4704, while the sum is 28.

The square root of 21477322 is about 4634.3631709222. The cubic root of 21477322 is about 277.9670871789.

The spelling of 21477322 in words is "twenty-one million, four hundred seventy-seven thousand, three hundred twenty-two".