38320401 has 24 divisors (see below), whose sum is σ = 60266784. Its totient is φ = 21591360.

The previous prime is 38320391. The next prime is 38320411. The reversal of 38320401 is 10402383.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (38320391) and next prime (38320411).

It is not a de Polignac number, because 38320401 - 2⁷ = 38320273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38320411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8946 + ... + 12516.

It is an arithmetic number, because the mean of its divisors is an integer number (2511116).

Almost surely, 2^38320401 is an apocalyptic number.

It is an amenable number.

38320401 is a deficient number, since it is larger than the sum of its proper divisors (21946383).

38320401 is a wasteful number, since it uses less digits than its factorization.

38320401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661 (or 3654 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 38320401 is about 6190.3474054370. The cubic root of 38320401 is about 337.1397923741.

Adding to 38320401 its reverse (10402383), we get a palindrome (48722784).

The spelling of 38320401 in words is "thirty-eight million, three hundred twenty thousand, four hundred one".