211493460 has 24 divisors (see below), whose sum is σ = 592181856. Its totient is φ = 56398240.

The previous prime is 211493437. The next prime is 211493461. The reversal of 211493460 is 64394112.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211493461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1762386 + ... + 1762505.

It is an arithmetic number, because the mean of its divisors is an integer number (24674244).

Almost surely, 2^211493460 is an apocalyptic number.

211493460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211493460 is an abundant number, since it is smaller than the sum of its proper divisors (380688396).

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

211493460 is a wasteful number, since it uses less digits than its factorization.

211493460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3524903 (or 3524901 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 211493460 is about 14542.8147206791. The cubic root of 211493460 is about 595.7979173151.

The spelling of 211493460 in words is "two hundred eleven million, four hundred ninety-three thousand, four hundred sixty".