214523540 has 48 divisors (see below), whose sum is σ = 561665664. Its totient is φ = 66864000.

The previous prime is 214523539. The next prime is 214523579. The reversal of 214523540 is 45325412.

It is a happy number.

214523540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68111 + ... + 71190.

It is an arithmetic number, because the mean of its divisors is an integer number (11701368).

Almost surely, 2^214523540 is an apocalyptic number.

214523540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214523540 is an abundant number, since it is smaller than the sum of its proper divisors (347142124).

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

214523540 is a wasteful number, since it uses less digits than its factorization.

214523540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139328 (or 139326 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 214523540 is about 14646.6221361787. The cubic root of 214523540 is about 598.6297806209.

Adding to 214523540 its reverse (45325412), we get a palindrome (259848952).

The spelling of 214523540 in words is "two hundred fourteen million, five hundred twenty-three thousand, five hundred forty".