40375728 has 60 divisors (see below), whose sum is σ = 113539608. Its totient is φ = 13393920.

The previous prime is 40375721. The next prime is 40375729. The reversal of 40375728 is 82757304.

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

It is a junction number, because it is equal to n+sod(n) for n = 40375692 and 40375701.

It is not an unprimeable number, because it can be changed into a prime (40375721) 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, 36463 + ... + 37553.

Almost surely, 2^40375728 is an apocalyptic number.

40375728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40375728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56769804).

40375728 is an abundant number, since it is smaller than the sum of its proper divisors (73163880).

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

40375728 is a wasteful number, since it uses less digits than its factorization.

40375728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362 (or 1353 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 40375728 is about 6354.1897988650. The cubic root of 40375728 is about 343.0626636836.

The spelling of 40375728 in words is "forty million, three hundred seventy-five thousand, seven hundred twenty-eight".