30696217920 has 224 divisors, whose sum is σ = 110126678400. Its totient is φ = 8046784512.

The previous prime is 30696217901. The next prime is 30696217927. The reversal of 30696217920 is 2971269603.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30696217927) 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, 479652 + ... + 539868.

Almost surely, 2^30696217920 is an apocalyptic number.

30696217920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30696217920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55063339200).

30696217920 is an abundant number, since it is smaller than the sum of its proper divisors (79430460480).

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

30696217920 is a wasteful number, since it uses less digits than its factorization.

30696217920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60302 (or 60286 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 30696217920 in words is "thirty billion, six hundred ninety-six million, two hundred seventeen thousand, nine hundred twenty".