38427897820 has 24 divisors (see below), whose sum is σ = 86906169504. Its totient is φ = 14188762176.

The previous prime is 38427897799. The next prime is 38427897853. The reversal of 38427897820 is 2879872483.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73899544 + ... + 73900063.

It is an arithmetic number, because the mean of its divisors is an integer number (3621090396).

Almost surely, 2^38427897820 is an apocalyptic number.

It is an amenable number.

38427897820 is an abundant number, since it is smaller than the sum of its proper divisors (48478271684).

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

38427897820 is a wasteful number, since it uses less digits than its factorization.

38427897820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147799629 (or 147799627 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 58.

The spelling of 38427897820 in words is "thirty-eight billion, four hundred twenty-seven million, eight hundred ninety-seven thousand, eight hundred twenty".