38297691 has 40 divisors (see below), whose sum is σ = 60856224. Its totient is φ = 23950080.

The previous prime is 38297689. The next prime is 38297717. The reversal of 38297691 is 19679283.

It is not a de Polignac number, because 38297691 - 2¹ = 38297689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38297671) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 113475 + ... + 113811.

Almost surely, 2^38297691 is an apocalyptic number.

38297691 is a deficient number, since it is larger than the sum of its proper divisors (22558533).

38297691 is a wasteful number, since it uses less digits than its factorization.

38297691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 424 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 38297691 is about 6188.5128261966. The cubic root of 38297691 is about 337.0731789647.

The spelling of 38297691 in words is "thirty-eight million, two hundred ninety-seven thousand, six hundred ninety-one".