228532722 has 32 divisors (see below), whose sum is σ = 524862720. Its totient is φ = 65607120.

The previous prime is 228532721. The next prime is 228532723. The reversal of 228532722 is 227235822.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (228532721) and next prime (228532723).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (228532721) 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, 89868 + ... + 92375.

It is an arithmetic number, because the mean of its divisors is an integer number (16401960).

Almost surely, 2^228532722 is an apocalyptic number.

228532722 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

228532722 is an abundant number, since it is smaller than the sum of its proper divisors (296329998).

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

228532722 is a wasteful number, since it uses less digits than its factorization.

228532722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182278.

The product of its digits is 26880, while the sum is 33.

The square root of 228532722 is about 15117.2987666448. The cubic root of 228532722 is about 611.3869025617.

The spelling of 228532722 in words is "two hundred twenty-eight million, five hundred thirty-two thousand, seven hundred twenty-two".