381415280 has 40 divisors (see below), whose sum is σ = 887620272. Its totient is φ = 152423424.

The previous prime is 381415271. The next prime is 381415297. The reversal of 381415280 is 82514183.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140819 + ... + 143501.

Almost surely, 2^381415280 is an apocalyptic number.

It is an amenable number.

381415280 is an abundant number, since it is smaller than the sum of its proper divisors (506204992).

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

381415280 is a wasteful number, since it uses less digits than its factorization.

381415280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4473 (or 4467 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 381415280 is about 19529.8561182616. The cubic root of 381415280 is about 725.2137491034.

The spelling of 381415280 in words is "three hundred eighty-one million, four hundred fifteen thousand, two hundred eighty".