38307897 has 10 divisors (see below), whose sum is σ = 57225498. Its totient is φ = 25538544.

The previous prime is 38307889. The next prime is 38307911. The reversal of 38307897 is 79870383.

It can be written as a sum of positive squares in only one way, i.e., 35712576 + 2595321 = 5976^2 + 1611^2 .

It is not a de Polignac number, because 38307897 - 2³ = 38307889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38307877) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 236388 + ... + 236549.

Almost surely, 2^38307897 is an apocalyptic number.

It is an amenable number.

38307897 is a deficient number, since it is larger than the sum of its proper divisors (18917601).

38307897 is an equidigital number, since it uses as much as digits as its factorization.

38307897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472949 (or 472940 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 38307897 is about 6189.3373635632. The cubic root of 38307897 is about 337.1031186576.

It can be divided in two parts, 38307 and 897, that added together give a square (39204 = 198²).

The spelling of 38307897 in words is "thirty-eight million, three hundred seven thousand, eight hundred ninety-seven".