30499830 has 48 divisors (see below), whose sum is σ = 80028000. Its totient is φ = 8058624.

The previous prime is 30499829. The next prime is 30499841. The reversal of 30499830 is 3899403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8671 + ... + 11669.

It is an arithmetic number, because the mean of its divisors is an integer number (1667250).

Almost surely, 2^30499830 is an apocalyptic number.

30499830 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 30499830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40014000).

30499830 is an abundant number, since it is smaller than the sum of its proper divisors (49528170).

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

30499830 is a wasteful number, since it uses less digits than its factorization.

30499830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3125 (or 3122 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 30499830 is about 5522.6651174954. The cubic root of 30499830 is about 312.4394079856.

It can be divided in two parts, 30499 and 830, that added together give a square (31329 = 177²).

The spelling of 30499830 in words is "thirty million, four hundred ninety-nine thousand, eight hundred thirty".