30988650 has 96 divisors (see below), whose sum is σ = 95851008. Its totient is φ = 6436800.

The previous prime is 30988649. The next prime is 30988663. The reversal of 30988650 is 5688903.

30988650 = 596² + 597² + ... + 672².

It is a junction number, because it is equal to n+sod(n) for n = 30988599 and 30988608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10209 + ... + 12891.

It is an arithmetic number, because the mean of its divisors is an integer number (998448).

Almost surely, 2^30988650 is an apocalyptic number.

30988650 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 30988650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47925504).

30988650 is an abundant number, since it is smaller than the sum of its proper divisors (64862358).

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

30988650 is a wasteful number, since it uses less digits than its factorization.

30988650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716 (or 2711 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 30988650 is about 5566.7450094288. The cubic root of 30988650 is about 314.0997222040.

The spelling of 30988650 in words is "thirty million, nine hundred eighty-eight thousand, six hundred fifty".