38421883440 has 100 divisors (see below), whose sum is σ = 133444915824. Its totient is φ = 10245833856.

The previous prime is 38421883421. The next prime is 38421883453. The reversal of 38421883440 is 4438812483.

It is a happy number.

It is a super-2 number, since 2×38421883440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2958172 + ... + 2971131.

Almost surely, 2^38421883440 is an apocalyptic number.

38421883440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38421883440 is an abundant number, since it is smaller than the sum of its proper divisors (95023032384).

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

38421883440 is a wasteful number, since it uses less digits than its factorization.

38421883440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5929328 (or 5929313 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 45.

The spelling of 38421883440 in words is "thirty-eight billion, four hundred twenty-one million, eight hundred eighty-three thousand, four hundred forty".