30397836 has 72 divisors (see below), whose sum is σ = 87390576. Its totient is φ = 8171520.

The previous prime is 30397823. The next prime is 30397849. The reversal of 30397836 is 63879303.

It is an interprime number because it is at equal distance from previous prime (30397823) and next prime (30397849).

It is a junction number, because it is equal to n+sod(n) for n = 30397794 and 30397803.

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, 8476 + ... + 11516.

It is an arithmetic number, because the mean of its divisors is an integer number (1213758).

Almost surely, 2^30397836 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 30397836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43695288).

30397836 is an abundant number, since it is smaller than the sum of its proper divisors (56992740).

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

30397836 is a wasteful number, since it uses less digits than its factorization.

30397836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079 (or 3070 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 30397836 is about 5513.4232560180. The cubic root of 30397836 is about 312.0907444790.

The spelling of 30397836 in words is "thirty million, three hundred ninety-seven thousand, eight hundred thirty-six".