38428757 has 2 divisors, whose sum is σ = 38428758. Its totient is φ = 38428756.

The previous prime is 38428727. The next prime is 38428801. The reversal of 38428757 is 75782483.

It is a happy number.

It is an a-pointer prime, because the next prime (38428801) can be obtained adding 38428757 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38427601 + 1156 = 6199^2 + 34^2 .

It is a cyclic number.

It is not a de Polignac number, because 38428757 - 2⁶ = 38428693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38428727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19214378 + 19214379.

It is an arithmetic number, because the mean of its divisors is an integer number (19214379).

Almost surely, 2^38428757 is an apocalyptic number.

It is an amenable number.

38428757 is a deficient number, since it is larger than the sum of its proper divisors (1).

38428757 is an equidigital number, since it uses as much as digits as its factorization.

38428757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 44.

The square root of 38428757 is about 6199.0932401441. The cubic root of 38428757 is about 337.4572624439.

The spelling of 38428757 in words is "thirty-eight million, four hundred twenty-eight thousand, seven hundred fifty-seven".