384426780 has 48 divisors (see below), whose sum is σ = 1139715360. Its totient is φ = 96483328.

The previous prime is 384426767. The next prime is 384426787. The reversal of 384426780 is 87624483.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384426787) 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, 187425 + ... + 189464.

It is an arithmetic number, because the mean of its divisors is an integer number (23744070).

Almost surely, 2^384426780 is an apocalyptic number.

384426780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

384426780 is an abundant number, since it is smaller than the sum of its proper divisors (755288580).

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

384426780 is a wasteful number, since it uses less digits than its factorization.

384426780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376918 (or 376916 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 384426780 is about 19606.8044311152. The cubic root of 384426780 is about 727.1174119944.

The spelling of 384426780 in words is "three hundred eighty-four million, four hundred twenty-six thousand, seven hundred eighty".