30397626 has 128 divisors (see below), whose sum is σ = 82944000. Its totient is φ = 8068032.

The previous prime is 30397613. The next prime is 30397637. The reversal of 30397626 is 62679303.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 515185 + ... + 515243.

It is an arithmetic number, because the mean of its divisors is an integer number (648000).

Almost surely, 2^30397626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30397626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41472000).

30397626 is an abundant number, since it is smaller than the sum of its proper divisors (52546374).

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

30397626 is a wasteful number, since it uses less digits than its factorization.

30397626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 36.

The square root of 30397626 is about 5513.4042115557. The cubic root of 30397626 is about 312.0900257962.

The spelling of 30397626 in words is "thirty million, three hundred ninety-seven thousand, six hundred twenty-six".