40451028 has 12 divisors (see below), whose sum is σ = 94385760. Its totient is φ = 13483672.

The previous prime is 40451023. The next prime is 40451053. The reversal of 40451028 is 82015404.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 40450989 and 40451007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40451023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1685448 + ... + 1685471.

It is an arithmetic number, because the mean of its divisors is an integer number (7865480).

Almost surely, 2^40451028 is an apocalyptic number.

It is an amenable number.

40451028 is an abundant number, since it is smaller than the sum of its proper divisors (53934732).

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

40451028 is a wasteful number, since it uses less digits than its factorization.

40451028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3370926 (or 3370924 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 40451028 is about 6360.1122631601. The cubic root of 40451028 is about 343.2757997875.

The spelling of 40451028 in words is "forty million, four hundred fifty-one thousand, twenty-eight".