40575090 has 32 divisors (see below), whose sum is σ = 103109760. Its totient is φ = 10183424.

The previous prime is 40575077. The next prime is 40575091. The reversal of 40575090 is 9057504.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (40575091) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 39270 + ... + 40289.

It is an arithmetic number, because the mean of its divisors is an integer number (3222180).

Almost surely, 2^40575090 is an apocalyptic number.

40575090 is an abundant number, since it is smaller than the sum of its proper divisors (62534670).

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

40575090 is a wasteful number, since it uses less digits than its factorization.

40575090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79586.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 40575090 is about 6369.8579262021. The cubic root of 40575090 is about 343.6263802322.

The spelling of 40575090 in words is "forty million, five hundred seventy-five thousand, ninety".