211386040 has 16 divisors (see below), whose sum is σ = 475618680. Its totient is φ = 84554400.

The previous prime is 211386029. The next prime is 211386047. The reversal of 211386040 is 40683112.

It is a junction number, because it is equal to n+sod(n) for n = 211385996 and 211386014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211386047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2642286 + ... + 2642365.

Almost surely, 2^211386040 is an apocalyptic number.

211386040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211386040 is an abundant number, since it is smaller than the sum of its proper divisors (264232640).

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

211386040 is a wasteful number, since it uses less digits than its factorization.

211386040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5284662 (or 5284658 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 211386040 is about 14539.1210188237. The cubic root of 211386040 is about 595.6970293240.

The spelling of 211386040 in words is "two hundred eleven million, three hundred eighty-six thousand, forty".