38642763 has 18 divisors (see below), whose sum is σ = 53505396. Its totient is φ = 24807168.

The previous prime is 38642759. The next prime is 38642803. The reversal of 38642763 is 36724683.

It is not a de Polignac number, because 38642763 - 2² = 38642759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38642753) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 398331 + ... + 398427.

It is an arithmetic number, because the mean of its divisors is an integer number (2972522).

Almost surely, 2^38642763 is an apocalyptic number.

38642763 is a deficient number, since it is larger than the sum of its proper divisors (14862633).

38642763 is an frugal number, since it uses more digits than its factorization.

38642763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 137 counting only the distinct ones).

The product of its digits is 145152, while the sum is 39.

The square root of 38642763 is about 6216.3303483647. The cubic root of 38642763 is about 338.0825253949.

The spelling of 38642763 in words is "thirty-eight million, six hundred forty-two thousand, seven hundred sixty-three".