214742440 has 32 divisors (see below), whose sum is σ = 527096160. Its totient is φ = 78088000.

The previous prime is 214742401. The next prime is 214742449. The reversal of 214742440 is 44247412.

214742440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×214742440² = 92228631074307200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 214742399 and 214742408.

It is not an unprimeable number, because it can be changed into a prime (214742449) 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, 243586 + ... + 244465.

It is an arithmetic number, because the mean of its divisors is an integer number (16471755).

Almost surely, 2^214742440 is an apocalyptic number.

214742440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214742440 is an abundant number, since it is smaller than the sum of its proper divisors (312353720).

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

214742440 is a wasteful number, since it uses less digits than its factorization.

214742440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488073 (or 488069 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 28.

The square root of 214742440 is about 14654.0929436114. The cubic root of 214742440 is about 598.8333255140.

Adding to 214742440 its reverse (44247412), we get a palindrome (258989852).

The spelling of 214742440 in words is "two hundred fourteen million, seven hundred forty-two thousand, four hundred forty".