385049280 has 224 divisors, whose sum is σ = 1524487680. Its totient is φ = 79994880.

The previous prime is 385049261. The next prime is 385049297. The reversal of 385049280 is 82940583.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71316 + ... + 76524.

Almost surely, 2^385049280 is an apocalyptic number.

385049280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385049280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (762243840).

385049280 is an abundant number, since it is smaller than the sum of its proper divisors (1139438400).

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

385049280 is a wasteful number, since it uses less digits than its factorization.

385049280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5247 (or 5237 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 385049280 is about 19622.6726008462. The cubic root of 385049280 is about 727.5096726433.

The spelling of 385049280 in words is "three hundred eighty-five million, forty-nine thousand, two hundred eighty".