214774644 has 72 divisors (see below), whose sum is σ = 608344128. Its totient is φ = 58692480.

The previous prime is 214774601. The next prime is 214774649. The reversal of 214774644 is 446477412.

It is a happy number.

214774644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×214774644² = 92256295410653472, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214774649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5584 + ... + 21464.

It is an arithmetic number, because the mean of its divisors is an integer number (8449224).

Almost surely, 2^214774644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214774644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304172064).

214774644 is an abundant number, since it is smaller than the sum of its proper divisors (393569484).

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

214774644 is a wasteful number, since it uses less digits than its factorization.

214774644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15925 (or 15916 counting only the distinct ones).

The product of its digits is 150528, while the sum is 39.

The square root of 214774644 is about 14655.1917080603. The cubic root of 214774644 is about 598.8632588371.

The spelling of 214774644 in words is "two hundred fourteen million, seven hundred seventy-four thousand, six hundred forty-four".