40378830 has 32 divisors (see below), whose sum is σ = 97537824. Its totient is φ = 10697856.

The previous prime is 40378829. The next prime is 40378837. The reversal of 40378830 is 3887304.

It is a junction number, because it is equal to n+sod(n) for n = 40378791 and 40378800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40378837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424 + ... + 8996.

It is an arithmetic number, because the mean of its divisors is an integer number (3048057).

Almost surely, 2^40378830 is an apocalyptic number.

40378830 is an abundant number, since it is smaller than the sum of its proper divisors (57158994).

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

40378830 is a wasteful number, since it uses less digits than its factorization.

40378830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8740.

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

The square root of 40378830 is about 6354.4338850916. The cubic root of 40378830 is about 343.0714491032.

The spelling of 40378830 in words is "forty million, three hundred seventy-eight thousand, eight hundred thirty".