38172004 has 48 divisors (see below), whose sum is σ = 78850800. Its totient is φ = 15998976.

The previous prime is 38171999. The next prime is 38172047. The reversal of 38172004 is 40027183.

It can be written as a sum of positive squares in 8 ways, for example, as 1327104 + 36844900 = 1152^2 + 6070^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 38172004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24892 + ... + 26380.

It is an arithmetic number, because the mean of its divisors is an integer number (1642725).

Almost surely, 2^38172004 is an apocalyptic number.

38172004 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

38172004 is an abundant number, since it is smaller than the sum of its proper divisors (40678796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38172004 is a wasteful number, since it uses less digits than its factorization.

38172004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552 (or 1550 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 38172004 is about 6178.3496178187. The cubic root of 38172004 is about 336.7040344541.

Adding to 38172004 its reverse (40027183), we get a palindrome (78199187).

The spelling of 38172004 in words is "thirty-eight million, one hundred seventy-two thousand, four".