30530500 has 192 divisors, whose sum is σ = 90994176. Its totient is φ = 8640000.

The previous prime is 30530483. The next prime is 30530501. The reversal of 30530500 is 503503.

30530500 = T₁₄₄ + T₁₄₅ + ... + T₅₇₀.

30530500 = 77² + 78² + ... + 451².

It is a happy number.

It is a super-2 number, since 2×30530500² = 1864222860500000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30530501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 500470 + ... + 500530.

It is an arithmetic number, because the mean of its divisors is an integer number (473928).

Almost surely, 2^30530500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30530500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45497088).

30530500 is an abundant number, since it is smaller than the sum of its proper divisors (60463676).

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

30530500 is a wasteful number, since it uses less digits than its factorization.

30530500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 16.

The square root of 30530500 is about 5525.4411588578. The cubic root of 30530500 is about 312.5441004429.

It can be divided in two parts, 305 and 30500, that multiplied together give a square (9302500 = 3050²).

The spelling of 30530500 in words is "thirty million, five hundred thirty thousand, five hundred".