305097030 has 120 divisors (see below), whose sum is σ = 954434448. Its totient is φ = 69727392.

The previous prime is 305097007. The next prime is 305097061. The reversal of 305097030 is 30790503.

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

It is a junction number, because it is equal to n+sod(n) for n = 305096985 and 305097003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 35847 + ... + 43533.

Almost surely, 2^305097030 is an apocalyptic number.

305097030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 305097030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477217224).

305097030 is an abundant number, since it is smaller than the sum of its proper divisors (649337418).

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

305097030 is a wasteful number, since it uses less digits than its factorization.

305097030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7720 (or 7704 counting only the distinct ones).

The product of its (nonzero) digits is 2835, while the sum is 27.

The square root of 305097030 is about 17467.0269364881. The cubic root of 305097030 is about 673.2029235291.

The spelling of 305097030 in words is "three hundred five million, ninety-seven thousand, thirty".