40128010 has 32 divisors (see below), whose sum is σ = 78744960. Its totient is φ = 14634048.

The previous prime is 40128001. The next prime is 40128013. The reversal of 40128010 is 1082104.

It is a happy number.

It is a super-2 number, since 2×40128010² = 3220514373120200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40128013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8931 + ... + 12649.

It is an arithmetic number, because the mean of its divisors is an integer number (2460780).

Almost surely, 2^40128010 is an apocalyptic number.

40128010 is a deficient number, since it is larger than the sum of its proper divisors (38616950).

40128010 is a wasteful number, since it uses less digits than its factorization.

40128010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3822.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 40128010 is about 6334.6673156528. The cubic root of 40128010 is about 342.3596242187.

The spelling of 40128010 in words is "forty million, one hundred twenty-eight thousand, ten".