303540030 has 48 divisors (see below), whose sum is σ = 790255440. Its totient is φ = 80836224.

The previous prime is 303540023. The next prime is 303540031. The reversal of 303540030 is 30045303.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 303539985 and 303540012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303540031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84001 + ... + 87539.

It is an arithmetic number, because the mean of its divisors is an integer number (16463655).

Almost surely, 2^303540030 is an apocalyptic number.

303540030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

303540030 is an abundant number, since it is smaller than the sum of its proper divisors (486715410).

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

303540030 is a wasteful number, since it uses less digits than its factorization.

303540030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505 (or 4502 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 303540030 is about 17422.4002364772. The cubic root of 303540030 is about 672.0557856537.

Adding to 303540030 its reverse (30045303), we get a palindrome (333585333).

The spelling of 303540030 in words is "three hundred three million, five hundred forty thousand, thirty".