30849630 has 64 divisors (see below), whose sum is σ = 86704128. Its totient is φ = 6877440.

The previous prime is 30849587. The next prime is 30849631. The reversal of 30849630 is 3694803.

It is a super-2 number, since 2×30849630² = 1903399342273800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30849591 and 30849600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30849631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6819 + ... + 10401.

It is an arithmetic number, because the mean of its divisors is an integer number (1354752).

Almost surely, 2^30849630 is an apocalyptic number.

30849630 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 30849630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43352064).

30849630 is an abundant number, since it is smaller than the sum of its proper divisors (55854498).

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

30849630 is a wasteful number, since it uses less digits than its factorization.

30849630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3641.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 30849630 is about 5554.2443230380. The cubic root of 30849630 is about 313.6293176703.

The spelling of 30849630 in words is "thirty million, eight hundred forty-nine thousand, six hundred thirty".