214512440 has 32 divisors (see below), whose sum is σ = 483295680. Its totient is φ = 85690752.

The previous prime is 214512433. The next prime is 214512457. The reversal of 214512440 is 44215412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30977 + ... + 37263.

It is an arithmetic number, because the mean of its divisors is an integer number (15102990).

Almost surely, 2^214512440 is an apocalyptic number.

214512440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214512440 is an abundant number, since it is smaller than the sum of its proper divisors (268783240).

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

214512440 is a wasteful number, since it uses less digits than its factorization.

214512440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7151 (or 7147 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 214512440 is about 14646.2432043169. The cubic root of 214512440 is about 598.6194555610.

Adding to 214512440 its reverse (44215412), we get a palindrome (258727852).

The spelling of 214512440 in words is "two hundred fourteen million, five hundred twelve thousand, four hundred forty".