90230490 has 64 divisors (see below), whose sum is σ = 274993920. Its totient is φ = 20623680.

The previous prime is 90230489. The next prime is 90230519. The reversal of 90230490 is 9403209.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 21981 + ... + 25760.

It is an arithmetic number, because the mean of its divisors is an integer number (4296780).

Almost surely, 2^90230490 is an apocalyptic number.

90230490 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

90230490 is an abundant number, since it is smaller than the sum of its proper divisors (184763430).

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

90230490 is a wasteful number, since it uses less digits than its factorization.

90230490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47764 (or 47758 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 90230490 is about 9498.9731023938. The cubic root of 90230490 is about 448.5227111238.

Adding to 90230490 its reverse (9403209), we get a palindrome (99633699).

The spelling of 90230490 in words is "ninety million, two hundred thirty thousand, four hundred ninety".