211453040 has 40 divisors (see below), whose sum is σ = 500914368. Its totient is φ = 82983680.

The previous prime is 211453037. The next prime is 211453049. The reversal of 211453040 is 40354112.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211453049) by changing a digit.

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, 20696 + ... + 29175.

Almost surely, 2^211453040 is an apocalyptic number.

211453040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211453040 is an abundant number, since it is smaller than the sum of its proper divisors (289461328).

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

211453040 is a wasteful number, since it uses less digits than its factorization.

211453040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49937 (or 49931 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 211453040 is about 14541.4249645624. The cubic root of 211453040 is about 595.7599591892.

The spelling of 211453040 in words is "two hundred eleven million, four hundred fifty-three thousand, forty".