28373837 has 2 divisors, whose sum is σ = 28373838. Its totient is φ = 28373836.

The previous prime is 28373809. The next prime is 28373879. The reversal of 28373837 is 73837382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28185481 + 188356 = 5309^2 + 434^2 .

It is a cyclic number.

It is not a de Polignac number, because 28373837 - 2¹⁴ = 28357453 is a prime.

It is a super-2 number, since 2×28373837² = 1610149252205138, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28373794 and 28373803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28373537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14186918 + 14186919.

It is an arithmetic number, because the mean of its divisors is an integer number (14186919).

Almost surely, 2^28373837 is an apocalyptic number.

It is an amenable number.

28373837 is a deficient number, since it is larger than the sum of its proper divisors (1).

28373837 is an equidigital number, since it uses as much as digits as its factorization.

28373837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 41.

The square root of 28373837 is about 5326.7097724580. The cubic root of 28373837 is about 305.0043428567.

The spelling of 28373837 in words is "twenty-eight million, three hundred seventy-three thousand, eight hundred thirty-seven".