40147776 has 84 divisors (see below), whose sum is σ = 117604032. Its totient is φ = 13089024.

The previous prime is 40147771. The next prime is 40147777. The reversal of 40147776 is 67774104.

It is a super-2 number, since 2×40147776² = 3223687835492352, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40147776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40147771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26331 + ... + 27813.

It is an arithmetic number, because the mean of its divisors is an integer number (1400048).

Almost surely, 2^40147776 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 40147776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58802016).

40147776 is an abundant number, since it is smaller than the sum of its proper divisors (77456256).

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

40147776 is a wasteful number, since it uses less digits than its factorization.

40147776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548 (or 1535 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 40147776 is about 6336.2272686513. The cubic root of 40147776 is about 342.4158274339.

The spelling of 40147776 in words is "forty million, one hundred forty-seven thousand, seven hundred seventy-six".