40890528 has 96 divisors (see below), whose sum is σ = 136321920. Its totient is φ = 11681280.

The previous prime is 40890511. The next prime is 40890529. The reversal of 40890528 is 82509804.

40890528 is a `hidden beast` number, since 40 + 8 + 90 + 528 = 666.

40890528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

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 = 40890492 and 40890501.

It is not an unprimeable number, because it can be changed into a prime (40890529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2668 + ... + 9428.

It is an arithmetic number, because the mean of its divisors is an integer number (1420020).

Almost surely, 2^40890528 is an apocalyptic number.

40890528 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 40890528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68160960).

40890528 is an abundant number, since it is smaller than the sum of its proper divisors (95431392).

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

40890528 is a wasteful number, since it uses less digits than its factorization.

40890528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6787 (or 6773 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 40890528 is about 6394.5701966590. The cubic root of 40890528 is about 344.5145535479.

The spelling of 40890528 in words is "forty million, eight hundred ninety thousand, five hundred twenty-eight".