378338440 has 32 divisors (see below), whose sum is σ = 852480000. Its totient is φ = 151118784.

The previous prime is 378338399. The next prime is 378338449. The reversal of 378338440 is 44833873.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 378338393 and 378338402.

It is not an unprimeable number, because it can be changed into a prime (378338449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23161 + ... + 35959.

It is an arithmetic number, because the mean of its divisors is an integer number (26640000).

Almost surely, 2^378338440 is an apocalyptic number.

It is an amenable number.

378338440 is an abundant number, since it is smaller than the sum of its proper divisors (474141560).

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

378338440 is a wasteful number, since it uses less digits than its factorization.

378338440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13549 (or 13545 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 378338440 is about 19450.9238855125. The cubic root of 378338440 is about 723.2584055034.

The spelling of 378338440 in words is "three hundred seventy-eight million, three hundred thirty-eight thousand, four hundred forty".