30700120 has 48 divisors (see below), whose sum is σ = 75937680. Its totient is φ = 11161920.

The previous prime is 30700099. The next prime is 30700139. The reversal of 30700120 is 2100703.

It is a self number, because there is not a number n which added to its sum of digits gives 30700120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1669 + ... + 8011.

It is an arithmetic number, because the mean of its divisors is an integer number (1582035).

Almost surely, 2^30700120 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 30700120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37968840).

30700120 is an abundant number, since it is smaller than the sum of its proper divisors (45237560).

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

30700120 is a wasteful number, since it uses less digits than its factorization.

30700120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6376 (or 6361 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 30700120 is about 5540.7688997106. The cubic root of 30700120 is about 313.1218380617.

Adding to 30700120 its reverse (2100703), we get a palindrome (32800823).

The spelling of 30700120 in words is "thirty million, seven hundred thousand, one hundred twenty".