40130828 has 12 divisors (see below), whose sum is σ = 70275912. Its totient is φ = 20052000.

The previous prime is 40130821. The next prime is 40130843. The reversal of 40130828 is 82803104.

It is a super-2 number, since 2×40130828² = 3220966711931168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40130797 and 40130806.

It is not an unprimeable number, because it can be changed into a prime (40130821) 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, 6776 + ... + 11232.

It is an arithmetic number, because the mean of its divisors is an integer number (5856326).

Almost surely, 2^40130828 is an apocalyptic number.

It is an amenable number.

40130828 is a deficient number, since it is larger than the sum of its proper divisors (30145084).

40130828 is a wasteful number, since it uses less digits than its factorization.

40130828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6712 (or 6710 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 40130828 is about 6334.8897385827. The cubic root of 40130828 is about 342.3676381292.

The spelling of 40130828 in words is "forty million, one hundred thirty thousand, eight hundred twenty-eight".