2217234492 has 144 divisors (see below), whose sum is σ = 6349271040. Its totient is φ = 668622240.

The previous prime is 2217234491. The next prime is 2217234497. The reversal of 2217234492 is 2944327122.

It is a happy number.

2217234492 is a `hidden beast` number, since 221 + 7 + 2 + 344 + 92 = 666.

It is a super-2 number, since 2×2217234492² = 9832257585028996128, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217234491) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5004823 + ... + 5005265.

It is an arithmetic number, because the mean of its divisors is an integer number (44092160).

Almost surely, 2^2217234492 is an apocalyptic number.

2217234492 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2217234492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3174635520).

2217234492 is an abundant number, since it is smaller than the sum of its proper divisors (4132036548).

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

2217234492 is a wasteful number, since it uses less digits than its factorization.

2217234492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 842 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 2217234492 is about 47087.5194929612. The cubic root of 2217234492 is about 1303.9788338554.

The spelling of 2217234492 in words is "two billion, two hundred seventeen million, two hundred thirty-four thousand, four hundred ninety-two".