214545140 has 12 divisors (see below), whose sum is σ = 450544836. Its totient is φ = 85818048.

The previous prime is 214545139. The next prime is 214545157. The reversal of 214545140 is 41545412.

It can be written as a sum of positive squares in 2 ways, for example, as 63648484 + 150896656 = 7978^2 + 12284^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5363609 + ... + 5363648.

It is an arithmetic number, because the mean of its divisors is an integer number (37545403).

Almost surely, 2^214545140 is an apocalyptic number.

214545140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214545140 is an abundant number, since it is smaller than the sum of its proper divisors (235999696).

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

214545140 is a wasteful number, since it uses less digits than its factorization.

214545140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10727266 (or 10727264 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 214545140 is about 14647.3594890001. The cubic root of 214545140 is about 598.6498716084.

The spelling of 214545140 in words is "two hundred fourteen million, five hundred forty-five thousand, one hundred forty".