211742628 has 24 divisors (see below), whose sum is σ = 500021088. Its totient is φ = 69730176.

The previous prime is 211742627. The next prime is 211742639. The reversal of 211742628 is 826247112.

It is not an unprimeable number, because it can be changed into a prime (211742627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105301 + ... + 107292.

It is an arithmetic number, because the mean of its divisors is an integer number (20834212).

Almost surely, 2^211742628 is an apocalyptic number.

It is an amenable number.

211742628 is an abundant number, since it is smaller than the sum of its proper divisors (288278460).

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

211742628 is a wasteful number, since it uses less digits than its factorization.

211742628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212683 (or 212681 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 211742628 is about 14551.3789037328. The cubic root of 211742628 is about 596.0318024259.

The spelling of 211742628 in words is "two hundred eleven million, seven hundred forty-two thousand, six hundred twenty-eight".