40262890 has 16 divisors (see below), whose sum is σ = 72567432. Its totient is φ = 16084224.

The previous prime is 40262869. The next prime is 40262899. The reversal of 40262890 is 9826204.

It can be written as a sum of positive squares in 4 ways, for example, as 22648081 + 17614809 = 4759^2 + 4197^2 .

It is a super-2 number, since 2×40262890² = 3242200622304200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40262899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7222 + ... + 11518.

Almost surely, 2^40262890 is an apocalyptic number.

40262890 is a deficient number, since it is larger than the sum of its proper divisors (32304542).

40262890 is a wasteful number, since it uses less digits than its factorization.

40262890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5241.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 40262890 is about 6345.3045632184. The cubic root of 40262890 is about 342.7427798965.

The spelling of 40262890 in words is "forty million, two hundred sixty-two thousand, eight hundred ninety".