40990248 has 48 divisors (see below), whose sum is σ = 119557620. Its totient is φ = 12612096.

The previous prime is 40990237. The next prime is 40990249. The reversal of 40990248 is 84209904.

It is a happy number.

40990248 is a `hidden beast` number, since 409 + 9 + 0 + 248 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 40678884 + 311364 = 6378^2 + 558^2 .

It is a super-2 number, since 2×40990248² = 3360400862203008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40990249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20961 + ... + 22832.

Almost surely, 2^40990248 is an apocalyptic number.

It is an amenable number.

40990248 is an abundant number, since it is smaller than the sum of its proper divisors (78567372).

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

40990248 is a wasteful number, since it uses less digits than its factorization.

40990248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43818 (or 43811 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 40990248 is about 6402.3626888829. The cubic root of 40990248 is about 344.7943828342.

The spelling of 40990248 in words is "forty million, nine hundred ninety thousand, two hundred forty-eight".