40683780 has 144 divisors (see below), whose sum is σ = 133346304. Its totient is φ = 10010880.

The previous prime is 40683761. The next prime is 40683793. The reversal of 40683780 is 8738604.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128182 + ... + 128498.

It is an arithmetic number, because the mean of its divisors is an integer number (926016).

Almost surely, 2^40683780 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 40683780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66673152).

40683780 is an abundant number, since it is smaller than the sum of its proper divisors (92662524).

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

40683780 is a wasteful number, since it uses less digits than its factorization.

40683780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 40683780 is about 6378.3838078309. The cubic root of 40683780 is about 343.9329349160.

The spelling of 40683780 in words is "forty million, six hundred eighty-three thousand, seven hundred eighty".