211540492 has 12 divisors (see below), whose sum is σ = 372242416. Its totient is φ = 105185520.

The previous prime is 211540487. The next prime is 211540493. The reversal of 211540492 is 294045112.

211540492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 211540492.

It is not an unprimeable number, because it can be changed into a prime (211540493) 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, 145368 + ... + 146815.

Almost surely, 2^211540492 is an apocalyptic number.

It is an amenable number.

211540492 is a deficient number, since it is larger than the sum of its proper divisors (160701924).

211540492 is a wasteful number, since it uses less digits than its factorization.

211540492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292368 (or 292366 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 211540492 is about 14544.4316492601. The cubic root of 211540492 is about 595.8420786345.

The spelling of 211540492 in words is "two hundred eleven million, five hundred forty thousand, four hundred ninety-two".