387825478280 has 64 divisors (see below), whose sum is σ = 887210496000. Its totient is φ = 152545496320.

The previous prime is 387825478277. The next prime is 387825478283. The reversal of 387825478280 is 82874528783.

It is an interprime number because it is at equal distance from previous prime (387825478277) and next prime (387825478283).

It is a super-2 number, since 2×387825478280² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (387825478283) 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, 909446 + ... + 1265994.

It is an arithmetic number, because the mean of its divisors is an integer number (13862664000).

Almost surely, 2^387825478280 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 387825478280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (443605248000).

387825478280 is an abundant number, since it is smaller than the sum of its proper divisors (499385017720).

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

387825478280 is a wasteful number, since it uses less digits than its factorization.

387825478280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357014 (or 357010 counting only the distinct ones).

The product of its (nonzero) digits is 48168960, while the sum is 62.

The spelling of 387825478280 in words is "three hundred eighty-seven billion, eight hundred twenty-five million, four hundred seventy-eight thousand, two hundred eighty".