385751280 has 80 divisors (see below), whose sum is σ = 1223671680. Its totient is φ = 100472064.

The previous prime is 385751269. The next prime is 385751297. The reversal of 385751280 is 82157583.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8370 + ... + 29009.

It is an arithmetic number, because the mean of its divisors is an integer number (15295896).

Almost surely, 2^385751280 is an apocalyptic number.

385751280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385751280 is an abundant number, since it is smaller than the sum of its proper divisors (837920400).

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

385751280 is a wasteful number, since it uses less digits than its factorization.

385751280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37438 (or 37432 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 385751280 is about 19640.5519270717. The cubic root of 385751280 is about 727.9515223526.

The spelling of 385751280 in words is "three hundred eighty-five million, seven hundred fifty-one thousand, two hundred eighty".