72026 has 4 divisors (see below), whose sum is σ = 108042. Its totient is φ = 36012.

The previous prime is 72019. The next prime is 72031. The reversal of 72026 is 62027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62027 = 7 ⋅8861.

It can be written as a sum of positive squares in only one way, i.e., 63001 + 9025 = 251^2 + 95^2 .

It is a junction number, because it is equal to n+sod(n) for n = 71995 and 72013.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18005 + ... + 18008.

2⁷²⁰²⁶ is an apocalyptic number.

72026 is a deficient number, since it is larger than the sum of its proper divisors (36016).

72026 is a wasteful number, since it uses less digits than its factorization.

72026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36015.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 72026 is about 268.3766010665. The cubic root of 72026 is about 41.6066834676.

Subtracting from 72026 its reverse (62027), we obtain a palindrome (9999).

The spelling of 72026 in words is "seventy-two thousand, twenty-six".