900136290 has 32 divisors (see below), whose sum is σ = 2192575680. Its totient is φ = 236453184.

The previous prime is 900136283. The next prime is 900136297. The reversal of 900136290 is 92631009.

It is an interprime number because it is at equal distance from previous prime (900136283) and next prime (900136297).

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 (900136297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221905 + ... + 225924.

It is an arithmetic number, because the mean of its divisors is an integer number (68517990).

Almost surely, 2^900136290 is an apocalyptic number.

900136290 is an abundant number, since it is smaller than the sum of its proper divisors (1292439390).

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

900136290 is a wasteful number, since it uses less digits than its factorization.

900136290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447906.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 900136290 is about 30002.2714140113. The cubic root of 900136290 is about 965.5381179044.

Adding to 900136290 its reverse (92631009), we get a palindrome (992767299).

The spelling of 900136290 in words is "nine hundred million, one hundred thirty-six thousand, two hundred ninety".