30630534 has 48 divisors (see below), whose sum is σ = 68693184. Its totient is φ = 9030000.

The previous prime is 30630529. The next prime is 30630539. The reversal of 30630534 is 43503603.

It is an interprime number because it is at equal distance from previous prime (30630529) and next prime (30630539).

It is a super-2 number, since 2×30630534² = 1876459226250312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30630539) 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, 121909 + ... + 122159.

It is an arithmetic number, because the mean of its divisors is an integer number (1431108).

Almost surely, 2^30630534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30630534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34346592).

30630534 is an abundant number, since it is smaller than the sum of its proper divisors (38062650).

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

30630534 is a wasteful number, since it uses less digits than its factorization.

30630534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 24.

The square root of 30630534 is about 5534.4858839824. The cubic root of 30630534 is about 312.8850813380.

The spelling of 30630534 in words is "thirty million, six hundred thirty thousand, five hundred thirty-four".