720470428 has 12 divisors (see below), whose sum is σ = 1269286200. Its totient is φ = 357817232.

The previous prime is 720470381. The next prime is 720470447. The reversal of 720470428 is 824074027.

It is a junction number, because it is equal to n+sod(n) for n = 720470393 and 720470402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603826 + ... + 605017.

It is an arithmetic number, because the mean of its divisors is an integer number (105773850).

Almost surely, 2^720470428 is an apocalyptic number.

It is an amenable number.

720470428 is a deficient number, since it is larger than the sum of its proper divisors (548815772).

720470428 is a wasteful number, since it uses less digits than its factorization.

720470428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208996 (or 1208994 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 720470428 is about 26841.5802068358. The cubic root of 720470428 is about 896.4761085056.

The spelling of 720470428 in words is "seven hundred twenty million, four hundred seventy thousand, four hundred twenty-eight".