900234390 has 64 divisors (see below), whose sum is σ = 2396977920. Its totient is φ = 214535040.

The previous prime is 900234373. The next prime is 900234397. The reversal of 900234390 is 93432009.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900234397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3649 + ... + 42588.

It is an arithmetic number, because the mean of its divisors is an integer number (37452780).

Almost surely, 2^900234390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 900234390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1198488960).

900234390 is an abundant number, since it is smaller than the sum of its proper divisors (1496743530).

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

900234390 is a wasteful number, since it uses less digits than its factorization.

900234390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46317.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 900234390 is about 30003.9062456874. The cubic root of 900234390 is about 965.5731925368.

Adding to 900234390 its reverse (93432009), we get a palindrome (993666399).

The spelling of 900234390 in words is "nine hundred million, two hundred thirty-four thousand, three hundred ninety".