306993398000 has 40 divisors (see below), whose sum is σ = 742310041200. Its totient is φ = 122797358400.

The previous prime is 306993397999. The next prime is 306993398003. The reversal of 306993398000 is 893399603.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×306993398000³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a self number, because there is not a number n which added to its sum of digits gives 306993398000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306993398003) 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 7 ways as a sum of consecutive naturals, for example, 76746350 + ... + 76750349.

It is an arithmetic number, because the mean of its divisors is an integer number (18557751030).

Almost surely, 2^306993398000 is an apocalyptic number.

It is an amenable number.

306993398000 is an abundant number, since it is smaller than the sum of its proper divisors (435316643200).

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

306993398000 is a wasteful number, since it uses less digits than its factorization.

306993398000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153496722 (or 153496706 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 50.

The spelling of 306993398000 in words is "three hundred six billion, nine hundred ninety-three million, three hundred ninety-eight thousand".