30750780400 has 60 divisors (see below), whose sum is σ = 74532653712. Its totient is φ = 12191441920.

The previous prime is 30750780371. The next prime is 30750780407. The reversal of 30750780400 is 408705703.

It is a super-2 number, since 2×30750780400² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30750780407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 294964 + ... + 385363.

Almost surely, 2^30750780400 is an apocalyptic number.

It is an amenable number.

30750780400 is an abundant number, since it is smaller than the sum of its proper divisors (43781873312).

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

30750780400 is a wasteful number, since it uses less digits than its factorization.

30750780400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680458 (or 680447 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The spelling of 30750780400 in words is "thirty billion, seven hundred fifty million, seven hundred eighty thousand, four hundred".