724678157628 has 48 divisors (see below), whose sum is σ = 1878919812000. Its totient is φ = 241543367424.

The previous prime is 724678157611. The next prime is 724678157639. The reversal of 724678157628 is 826751876427.

It is a happy number.

724678157628 is a `hidden beast` number, since 7 + 2 + 467 + 81 + 5 + 76 + 28 = 666.

724678157628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×724678157628² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1473268 + ... + 1902596.

It is an arithmetic number, because the mean of its divisors is an integer number (39144162750).

Almost surely, 2^724678157628 is an apocalyptic number.

It is an amenable number.

724678157628 is an abundant number, since it is smaller than the sum of its proper divisors (1154241654372).

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

724678157628 is a wasteful number, since it uses less digits than its factorization.

724678157628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444971 (or 444963 counting only the distinct ones).

The product of its digits is 63221760, while the sum is 63.

The spelling of 724678157628 in words is "seven hundred twenty-four billion, six hundred seventy-eight million, one hundred fifty-seven thousand, six hundred twenty-eight".