214181388 has 48 divisors (see below), whose sum is σ = 556318560. Its totient is φ = 71260992.

The previous prime is 214181381. The next prime is 214181389. The reversal of 214181388 is 883181412.

214181388 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (214181381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69006 + ... + 72042.

It is an arithmetic number, because the mean of its divisors is an integer number (11589970).

Almost surely, 2^214181388 is an apocalyptic number.

It is an amenable number.

214181388 is an abundant number, since it is smaller than the sum of its proper divisors (342137172).

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

214181388 is a wasteful number, since it uses less digits than its factorization.

214181388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703 (or 3695 counting only the distinct ones).

The product of its digits is 12288, while the sum is 36.

The square root of 214181388 is about 14634.9372393598. The cubic root of 214181388 is about 598.3113519046.

The spelling of 214181388 in words is "two hundred fourteen million, one hundred eighty-one thousand, three hundred eighty-eight".