7232228781 has 16 divisors (see below), whose sum is σ = 9873340224. Its totient is φ = 4706440704.

The previous prime is 7232228777. The next prime is 7232228803. The reversal of 7232228781 is 1878222327.

It is not a de Polignac number, because 7232228781 - 2² = 7232228777 is a prime.

It is a super-2 number, since 2×7232228781² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7232228711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202395 + ... + 235431.

It is an arithmetic number, because the mean of its divisors is an integer number (617083764).

Almost surely, 2^7232228781 is an apocalyptic number.

It is an amenable number.

7232228781 is a deficient number, since it is larger than the sum of its proper divisors (2641111443).

7232228781 is a wasteful number, since it uses less digits than its factorization.

7232228781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34780.

The product of its digits is 150528, while the sum is 42.

The square root of 7232228781 is about 85042.5116103705. The cubic root of 7232228781 is about 1933.8556426264.

The spelling of 7232228781 in words is "seven billion, two hundred thirty-two million, two hundred twenty-eight thousand, seven hundred eighty-one".