40490928 has 100 divisors (see below), whose sum is σ = 118531600. Its totient is φ = 13343616.

The previous prime is 40490927. The next prime is 40490939. The reversal of 40490928 is 82909404.

It is a happy number.

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 = 40490892 and 40490901.

It is not an unprimeable number, because it can be changed into a prime (40490927) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 203373 + ... + 203571.

It is an arithmetic number, because the mean of its divisors is an integer number (1185316).

Almost surely, 2^40490928 is an apocalyptic number.

40490928 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 40490928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59265800).

40490928 is an abundant number, since it is smaller than the sum of its proper divisors (78040672).

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

40490928 is a wasteful number, since it uses less digits than its factorization.

40490928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 40490928 is about 6363.2482271243. The cubic root of 40490928 is about 343.3886292522.

The spelling of 40490928 in words is "forty million, four hundred ninety thousand, nine hundred twenty-eight".