40454020 has 12 divisors (see below), whose sum is σ = 84953484. Its totient is φ = 16181600.

The previous prime is 40454017. The next prime is 40454053. The reversal of 40454020 is 2045404.

It can be written as a sum of positive squares in 2 ways, for example, as 24581764 + 15872256 = 4958^2 + 3984^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1011331 + ... + 1011370.

It is an arithmetic number, because the mean of its divisors is an integer number (7079457).

Almost surely, 2^40454020 is an apocalyptic number.

It is an amenable number.

40454020 is an abundant number, since it is smaller than the sum of its proper divisors (44499464).

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

40454020 is a wasteful number, since it uses less digits than its factorization.

40454020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022710 (or 2022708 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 40454020 is about 6360.3474747847. The cubic root of 40454020 is about 343.2842631560.

Adding to 40454020 its reverse (2045404), we get a palindrome (42499424).

The spelling of 40454020 in words is "forty million, four hundred fifty-four thousand, twenty".