38320129 has 4 divisors (see below), whose sum is σ = 38355376. Its totient is φ = 38284884.

The previous prime is 38320127. The next prime is 38320147. The reversal of 38320129 is 92102383.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92102383 = 881 ⋅104543.

It is a cyclic number.

It is not a de Polignac number, because 38320129 - 2¹ = 38320127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38320097 and 38320106.

It is not an unprimeable number, because it can be changed into a prime (38320127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15939 + ... + 18184.

It is an arithmetic number, because the mean of its divisors is an integer number (9588844).

Almost surely, 2^38320129 is an apocalyptic number.

It is an amenable number.

38320129 is a deficient number, since it is larger than the sum of its proper divisors (35247).

38320129 is a wasteful number, since it uses less digits than its factorization.

38320129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35246.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 38320129 is about 6190.3254357101. The cubic root of 38320129 is about 337.1389946942.

The spelling of 38320129 in words is "thirty-eight million, three hundred twenty thousand, one hundred twenty-nine".