72028037 has 2 divisors, whose sum is σ = 72028038. Its totient is φ = 72028036.

The previous prime is 72028001. The next prime is 72028039. The reversal of 72028037 is 73082027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58967041 + 13060996 = 7679^2 + 3614^2 .

It is a cyclic number.

It is not a de Polignac number, because 72028037 - 2¹⁰ = 72027013 is a prime.

It is a super-2 number, since 2×72028037² = 10376076228146738, which contains 22 as substring.

Together with 72028039, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72028039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36014018 + 36014019.

It is an arithmetic number, because the mean of its divisors is an integer number (36014019).

Almost surely, 2^72028037 is an apocalyptic number.

It is an amenable number.

72028037 is a deficient number, since it is larger than the sum of its proper divisors (1).

72028037 is an equidigital number, since it uses as much as digits as its factorization.

72028037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 72028037 is about 8486.9333095059. The cubic root of 72028037 is about 416.0707569640.

The spelling of 72028037 in words is "seventy-two million, twenty-eight thousand, thirty-seven".