211949892 has 216 divisors, whose sum is σ = 704729760. Its totient is φ = 54885600.

The previous prime is 211949873. The next prime is 211949911. The reversal of 211949892 is 298949112.

It is an interprime number because it is at equal distance from previous prime (211949873) and next prime (211949911).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 640167 + ... + 640497.

Almost surely, 2^211949892 is an apocalyptic number.

211949892 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211949892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352364880).

211949892 is an abundant number, since it is smaller than the sum of its proper divisors (492779868).

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

211949892 is a wasteful number, since it uses less digits than its factorization.

211949892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 354 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 211949892 is about 14558.4989610880. The cubic root of 211949892 is about 596.2262139952.

The spelling of 211949892 in words is "two hundred eleven million, nine hundred forty-nine thousand, eight hundred ninety-two".