211422408 has 32 divisors (see below), whose sum is σ = 528914400. Its totient is φ = 70426368.

The previous prime is 211422397. The next prime is 211422413. The reversal of 211422408 is 804224112.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 62160 + ... + 65472.

It is an arithmetic number, because the mean of its divisors is an integer number (16528575).

Almost surely, 2^211422408 is an apocalyptic number.

It is an amenable number.

211422408 is an abundant number, since it is smaller than the sum of its proper divisors (317491992).

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

211422408 is a wasteful number, since it uses less digits than its factorization.

211422408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5981 (or 5977 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 211422408 is about 14540.3716596241. The cubic root of 211422408 is about 595.7311896802.

The spelling of 211422408 in words is "two hundred eleven million, four hundred twenty-two thousand, four hundred eight".