378905526 has 48 divisors (see below), whose sum is σ = 865392528. Its totient is φ = 124221600.

The previous prime is 378905509. The next prime is 378905531. The reversal of 378905526 is 625509873.

It is a happy number.

378905526 is a `hidden beast` number, since 3 + 7 + 8 + 90 + 552 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23256 + ... + 36036.

It is an arithmetic number, because the mean of its divisors is an integer number (18029011).

Almost surely, 2^378905526 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 378905526, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (432696264).

378905526 is an abundant number, since it is smaller than the sum of its proper divisors (486487002).

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

378905526 is a wasteful number, since it uses less digits than its factorization.

378905526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12859 (or 12847 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 378905526 is about 19465.4957809967. The cubic root of 378905526 is about 723.6195856187.

The spelling of 378905526 in words is "three hundred seventy-eight million, nine hundred five thousand, five hundred twenty-six".