303530490 has 40 divisors (see below), whose sum is σ = 816161940. Its totient is φ = 80941248.

The previous prime is 303530489. The next prime is 303530509. The reversal of 303530490 is 94035303.

It can be written as a sum of positive squares in 2 ways, for example, as 287200809 + 16329681 = 16947^2 + 4041^2 .

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 19 ways as a sum of consecutive naturals, for example, 186555 + ... + 188174.

Almost surely, 2^303530490 is an apocalyptic number.

303530490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

303530490 is an abundant number, since it is smaller than the sum of its proper divisors (512631450).

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

303530490 is a wasteful number, since it uses less digits than its factorization.

303530490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374748 (or 374739 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 303530490 is about 17422.1264488581. The cubic root of 303530490 is about 672.0487448697.

Adding to 303530490 its reverse (94035303), we get a palindrome (397565793).

The spelling of 303530490 in words is "three hundred three million, five hundred thirty thousand, four hundred ninety".