40378600 has 24 divisors (see below), whose sum is σ = 93880710. Its totient is φ = 16151360.

The previous prime is 40378579. The next prime is 40378603. The reversal of 40378600 is 687304.

It can be written as a sum of positive squares in 3 ways, for example, as 19236996 + 21141604 = 4386^2 + 4598^2 .

It is not an unprimeable number, because it can be changed into a prime (40378603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100747 + ... + 101146.

Almost surely, 2^40378600 is an apocalyptic number.

40378600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40378600 is an abundant number, since it is smaller than the sum of its proper divisors (53502110).

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

40378600 is a wasteful number, since it uses less digits than its factorization.

40378600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201909 (or 201900 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 40378600 is about 6354.4157874662. The cubic root of 40378600 is about 343.0707977174.

It can be divided in two parts, 403 and 78600, that added together give a triangular number (79003 = T₃₉₇).

The spelling of 40378600 in words is "forty million, three hundred seventy-eight thousand, six hundred".