384156380 has 24 divisors (see below), whose sum is σ = 823894848. Its totient is φ = 150392768.

The previous prime is 384156343. The next prime is 384156389. The reversal of 384156380 is 83651483.

It is a super-2 number, since 2×384156380² = 295152248589408800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384156389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203399 + ... + 205278.

It is an arithmetic number, because the mean of its divisors is an integer number (34328952).

Almost surely, 2^384156380 is an apocalyptic number.

It is an amenable number.

384156380 is an abundant number, since it is smaller than the sum of its proper divisors (439738468).

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

384156380 is a wasteful number, since it uses less digits than its factorization.

384156380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408733 (or 408731 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 384156380 is about 19599.9076528437. The cubic root of 384156380 is about 726.9468908666.

The spelling of 384156380 in words is "three hundred eighty-four million, one hundred fifty-six thousand, three hundred eighty".