40747780 has 48 divisors (see below), whose sum is σ = 90780480. Its totient is φ = 15320448.

The previous prime is 40747769. The next prime is 40747781. The reversal of 40747780 is 8774704.

It is not an unprimeable number, because it can be changed into a prime (40747781) 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, 59319 + ... + 60001.

It is an arithmetic number, because the mean of its divisors is an integer number (1891260).

Almost surely, 2^40747780 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 40747780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45390240).

40747780 is an abundant number, since it is smaller than the sum of its proper divisors (50032700).

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

40747780 is a wasteful number, since it uses less digits than its factorization.

40747780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868 (or 866 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 40747780 is about 6383.3987812137. The cubic root of 40747780 is about 344.1131883703.

The spelling of 40747780 in words is "forty million, seven hundred forty-seven thousand, seven hundred eighty".