378071505 has 72 divisors (see below), whose sum is σ = 787048704. Its totient is φ = 167227200.

The previous prime is 378071503. The next prime is 378071563. The reversal of 378071505 is 505170873.

378071505 is a `hidden beast` number, since 3 + 7 + 80 + 71 + 505 = 666.

It is not a de Polignac number, because 378071505 - 2¹ = 378071503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 378071505.

It is not an unprimeable number, because it can be changed into a prime (378071501) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 65590 + ... + 71120.

It is an arithmetic number, because the mean of its divisors is an integer number (10931232).

Almost surely, 2^378071505 is an apocalyptic number.

378071505 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

378071505 is an abundant number, since it is smaller than the sum of its proper divisors (408977199).

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

378071505 is a wasteful number, since it uses less digits than its factorization.

378071505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5587 (or 5577 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 378071505 is about 19444.0609184399. The cubic root of 378071505 is about 723.0882682359.

The spelling of 378071505 in words is "three hundred seventy-eight million, seventy-one thousand, five hundred five".