40378380 has 96 divisors (see below), whose sum is σ = 130400256. Its totient is φ = 9144576.

The previous prime is 40378379. The next prime is 40378397. The reversal of 40378380 is 8387304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52962 + ... + 53718.

It is an arithmetic number, because the mean of its divisors is an integer number (1358336).

Almost surely, 2^40378380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40378380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65200128).

40378380 is an abundant number, since it is smaller than the sum of its proper divisors (90021876).

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

40378380 is a wasteful number, since it uses less digits than its factorization.

40378380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903 (or 901 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 40378380 is about 6354.3984766459. The cubic root of 40378380 is about 343.0701746505.

The spelling of 40378380 in words is "forty million, three hundred seventy-eight thousand, three hundred eighty".