30673443640 has 64 divisors (see below), whose sum is σ = 78958540800. Its totient is φ = 10505413248.

The previous prime is 30673443631. The next prime is 30673443641. The reversal of 30673443640 is 4634437603.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 30673443593 and 30673443602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30673443641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207321 + ... + 322999.

It is an arithmetic number, because the mean of its divisors is an integer number (1233727200).

Almost surely, 2^30673443640 is an apocalyptic number.

It is an amenable number.

30673443640 is an abundant number, since it is smaller than the sum of its proper divisors (48285097160).

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

30673443640 is a wasteful number, since it uses less digits than its factorization.

30673443640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116644 (or 116640 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 40.

The spelling of 30673443640 in words is "thirty billion, six hundred seventy-three million, four hundred forty-three thousand, six hundred forty".