38123780 has 24 divisors (see below), whose sum is σ = 81375000. Its totient is φ = 14999040.

The previous prime is 38123753. The next prime is 38123783. The reversal of 38123780 is 8732183.

It can be written as a sum of positive squares in 4 ways, for example, as 350464 + 37773316 = 592^2 + 6146^2 .

It is not an unprimeable number, because it can be changed into a prime (38123783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14405 + ... + 16844.

It is an arithmetic number, because the mean of its divisors is an integer number (3390625).

Almost surely, 2^38123780 is an apocalyptic number.

It is an amenable number.

38123780 is an abundant number, since it is smaller than the sum of its proper divisors (43251220).

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

38123780 is a wasteful number, since it uses less digits than its factorization.

38123780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31319 (or 31317 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 38123780 is about 6174.4457241116. The cubic root of 38123780 is about 336.5621847900.

The spelling of 38123780 in words is "thirty-eight million, one hundred twenty-three thousand, seven hundred eighty".