30398730 has 16 divisors (see below), whose sum is σ = 72957024. Its totient is φ = 8106320.

The previous prime is 30398723. The next prime is 30398743. The reversal of 30398730 is 3789303.

It is a super-2 number, since 2×30398730² = 1848165571225800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30398691 and 30398700.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506616 + ... + 506675.

It is an arithmetic number, because the mean of its divisors is an integer number (4559814).

Almost surely, 2^30398730 is an apocalyptic number.

30398730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30398730 is an abundant number, since it is smaller than the sum of its proper divisors (42558294).

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

30398730 is a wasteful number, since it uses less digits than its factorization.

30398730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013301.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 30398730 is about 5513.5043302785. The cubic root of 30398730 is about 312.0938039774.

The spelling of 30398730 in words is "thirty million, three hundred ninety-eight thousand, seven hundred thirty".