378909888 has 56 divisors (see below), whose sum is σ = 1145755392. Its totient is φ = 108259584.

The previous prime is 378909877. The next prime is 378909907. The reversal of 378909888 is 888909873.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-4 number, since 4×378909888⁴ (a number of 35 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139620 + ... + 142307.

Almost surely, 2^378909888 is an apocalyptic number.

It is an amenable number.

378909888 is an abundant number, since it is smaller than the sum of its proper divisors (766845504).

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

378909888 is a wasteful number, since it uses less digits than its factorization.

378909888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281949 (or 281939 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 60.

The square root of 378909888 is about 19465.6078250847. The cubic root of 378909888 is about 723.6223624028.

The spelling of 378909888 in words is "three hundred seventy-eight million, nine hundred nine thousand, eight hundred eighty-eight".