211192380 has 96 divisors (see below), whose sum is σ = 750919680. Its totient is φ = 48271680.

The previous prime is 211192363. The next prime is 211192409. The reversal of 211192380 is 83291112.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24156 + ... + 31715.

It is an arithmetic number, because the mean of its divisors is an integer number (7822080).

Almost surely, 2^211192380 is an apocalyptic number.

211192380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211192380 is an abundant number, since it is smaller than the sum of its proper divisors (539727300).

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

211192380 is a wasteful number, since it uses less digits than its factorization.

211192380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55896 (or 55888 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 211192380 is about 14532.4595303066. The cubic root of 211192380 is about 595.5150590384.

The spelling of 211192380 in words is "two hundred eleven million, one hundred ninety-two thousand, three hundred eighty".