40778682 has 96 divisors (see below), whose sum is σ = 103420800. Its totient is φ = 10644480.

The previous prime is 40778681. The next prime is 40778711. The reversal of 40778682 is 28687704.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (40778681) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 204819 + ... + 205017.

It is an arithmetic number, because the mean of its divisors is an integer number (1077300).

Almost surely, 2^40778682 is an apocalyptic number.

40778682 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 40778682, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51710400).

40778682 is an abundant number, since it is smaller than the sum of its proper divisors (62642118).

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

40778682 is a wasteful number, since it uses less digits than its factorization.

40778682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 40778682 is about 6385.8188198539. The cubic root of 40778682 is about 344.2001550611.

40778682 divided by its sum of digits (42) gives a triangular number (970921 = T₁₃₉₃).

The spelling of 40778682 in words is "forty million, seven hundred seventy-eight thousand, six hundred eighty-two".