730412640 has 120 divisors (see below), whose sum is σ = 2577793680. Its totient is φ = 194773248.

The previous prime is 730412629. The next prime is 730412651. The reversal of 730412640 is 46214037.

730412640 is a `hidden beast` number, since 7 + 3 + 0 + 4 + 12 + 640 = 666.

It is an interprime number because it is at equal distance from previous prime (730412629) and next prime (730412651).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15220 + ... + 41139.

It is an arithmetic number, because the mean of its divisors is an integer number (21481614).

Almost surely, 2^730412640 is an apocalyptic number.

It is an amenable number.

730412640 is an abundant number, since it is smaller than the sum of its proper divisors (1847381040).

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

730412640 is a wasteful number, since it uses less digits than its factorization.

730412640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56386 (or 56369 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 730412640 is about 27026.1473391973. The cubic root of 730412640 is about 900.5809582388.

Adding to 730412640 its reverse (46214037), we get a palindrome (776626677).

The spelling of 730412640 in words is "seven hundred thirty million, four hundred twelve thousand, six hundred forty".