38490017280 has 640 divisors, whose sum is σ = 146411629056. Its totient is φ = 8503296000.

The previous prime is 38490017263. The next prime is 38490017281. The reversal of 38490017280 is 8271009483.

It is a tau number, because it is divible by the number of its divisors (640).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38490017281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 110922067 + ... + 110922413.

Almost surely, 2^38490017280 is an apocalyptic number.

38490017280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38490017280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73205814528).

38490017280 is an abundant number, since it is smaller than the sum of its proper divisors (107921611776).

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

38490017280 is a wasteful number, since it uses less digits than its factorization.

38490017280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 38490017280 in words is "thirty-eight billion, four hundred ninety million, seventeen thousand, two hundred eighty".