378478587 has 16 divisors (see below), whose sum is σ = 526782752. Its totient is φ = 241470720.

The previous prime is 378478571. The next prime is 378478591. The reversal of 378478587 is 785874873.

It is not a de Polignac number, because 378478587 - 2⁴ = 378478571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378478787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21178 + ... + 34719.

It is an arithmetic number, because the mean of its divisors is an integer number (32923922).

Almost surely, 2^378478587 is an apocalyptic number.

378478587 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

378478587 is a deficient number, since it is larger than the sum of its proper divisors (148304165).

378478587 is a wasteful number, since it uses less digits than its factorization.

378478587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55998.

The product of its digits is 10536960, while the sum is 57.

The square root of 378478587 is about 19454.5261314687. The cubic root of 378478587 is about 723.3476994369.

The spelling of 378478587 in words is "three hundred seventy-eight million, four hundred seventy-eight thousand, five hundred eighty-seven".