40357890 has 24 divisors (see below), whose sum is σ = 104930748. Its totient is φ = 10762080.

The previous prime is 40357873. The next prime is 40357901. The reversal of 40357890 is 9875304.

It can be written as a sum of positive squares in 2 ways, for example, as 40106889 + 251001 = 6333^2 + 501^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224121 + ... + 224300.

Almost surely, 2^40357890 is an apocalyptic number.

40357890 is an abundant number, since it is smaller than the sum of its proper divisors (64572858).

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

40357890 is a wasteful number, since it uses less digits than its factorization.

40357890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448434 (or 448431 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 40357890 is about 6352.7860030069. The cubic root of 40357890 is about 343.0121345371.

The spelling of 40357890 in words is "forty million, three hundred fifty-seven thousand, eight hundred ninety".