38997798 has 32 divisors (see below), whose sum is σ = 89351424. Its totient is φ = 11115552.

The previous prime is 38997793. The next prime is 38997853. The reversal of 38997798 is 89779983.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38997793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22561 + ... + 24227.

It is an arithmetic number, because the mean of its divisors is an integer number (2792232).

Almost surely, 2^38997798 is an apocalyptic number.

38997798 is an abundant number, since it is smaller than the sum of its proper divisors (50353626).

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

38997798 is a wasteful number, since it uses less digits than its factorization.

38997798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236.

The product of its digits is 6858432, while the sum is 60.

The square root of 38997798 is about 6244.8216948124. The cubic root of 38997798 is about 339.1147617474.

The spelling of 38997798 in words is "thirty-eight million, nine hundred ninety-seven thousand, seven hundred ninety-eight".