40263090 has 64 divisors (see below), whose sum is σ = 116259840. Its totient is φ = 8717760.

The previous prime is 40263059. The next prime is 40263101. The reversal of 40263090 is 9036204.

It is a super-2 number, since 2×40263090² = 3242232832696200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40263090.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1056 + ... + 9035.

It is an arithmetic number, because the mean of its divisors is an integer number (1816560).

Almost surely, 2^40263090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40263090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58129920).

40263090 is an abundant number, since it is smaller than the sum of its proper divisors (75996750).

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

40263090 is a wasteful number, since it uses less digits than its factorization.

40263090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10127.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 40263090 is about 6345.3203228836. The cubic root of 40263090 is about 342.7433474037.

Adding to 40263090 its reverse (9036204), we get a palindrome (49299294).

The spelling of 40263090 in words is "forty million, two hundred sixty-three thousand, ninety".