38905880 has 64 divisors (see below), whose sum is σ = 98400960. Its totient is φ = 13736448.

The previous prime is 38905871. The next prime is 38905883. The reversal of 38905880 is 8850983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38905883) 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, 10334 + ... + 13586.

It is an arithmetic number, because the mean of its divisors is an integer number (1537515).

Almost surely, 2^38905880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38905880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49200480).

38905880 is an abundant number, since it is smaller than the sum of its proper divisors (59495080).

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

38905880 is a wasteful number, since it uses less digits than its factorization.

38905880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300 (or 3296 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 38905880 is about 6237.4578154886. The cubic root of 38905880 is about 338.8481204304.

The spelling of 38905880 in words is "thirty-eight million, nine hundred five thousand, eight hundred eighty".