40728210 has 32 divisors (see below), whose sum is σ = 102893760. Its totient is φ = 10289088.

The previous prime is 40728187. The next prime is 40728217. The reversal of 40728210 is 1282704.

It is not an unprimeable number, because it can be changed into a prime (40728217) 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, 35157 + ... + 36296.

It is an arithmetic number, because the mean of its divisors is an integer number (3215430).

Almost surely, 2^40728210 is an apocalyptic number.

40728210 is an abundant number, since it is smaller than the sum of its proper divisors (62165550).

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

40728210 is a wasteful number, since it uses less digits than its factorization.

40728210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71482.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 40728210 is about 6381.8657146637. The cubic root of 40728210 is about 344.0580902891.

The spelling of 40728210 in words is "forty million, seven hundred twenty-eight thousand, two hundred ten".