72722 has 8 divisors (see below), whose sum is σ = 117516. Its totient is φ = 33552.

The previous prime is 72719. The next prime is 72727. The reversal of 72722 is 22727.

It can be written as a sum of positive squares in 2 ways, for example, as 72361 + 361 = 269^2 + 19^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 72694 and 72703.

It is not an unprimeable number, because it can be changed into a prime (72727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1373 + ... + 1424.

2⁷²⁷²² is an apocalyptic number.

72722 is a deficient number, since it is larger than the sum of its proper divisors (44794).

72722 is a wasteful number, since it uses less digits than its factorization.

72722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812.

The product of its digits is 392, while the sum is 20.

The square root of 72722 is about 269.6701689101. The cubic root of 72722 is about 41.7402716765.

It can be divided in two parts, 72 and 722, that multiplied together give a square (51984 = 228²).

The spelling of 72722 in words is "seventy-two thousand, seven hundred twenty-two", and thus it is an iban number.