30696400 has 120 divisors (see below), whose sum is σ = 88873280. Its totient is φ = 9953280.

The previous prime is 30696383. The next prime is 30696403. The reversal of 30696400 is 469603.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30696403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52912 + ... + 53488.

Almost surely, 2^30696400 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 30696400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44436640).

30696400 is an abundant number, since it is smaller than the sum of its proper divisors (58176880).

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

30696400 is a wasteful number, since it uses less digits than its factorization.

30696400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 30696400 is about 5540.4331960597. The cubic root of 30696400 is about 313.1091903338.

The spelling of 30696400 in words is "thirty million, six hundred ninety-six thousand, four hundred".