780471072 has 48 divisors (see below), whose sum is σ = 2276376480. Its totient is φ = 260156736.

The previous prime is 780471059. The next prime is 780471073. The reversal of 780471072 is 270174087.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (780471073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450798 + ... + 452525.

It is an arithmetic number, because the mean of its divisors is an integer number (47424510).

Almost surely, 2^780471072 is an apocalyptic number.

780471072 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

780471072 is an abundant number, since it is smaller than the sum of its proper divisors (1495905408).

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

780471072 is a wasteful number, since it uses less digits than its factorization.

780471072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903342 (or 903328 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 780471072 is about 27936.9123562358. The cubic root of 780471072 is about 920.7016827129.

The spelling of 780471072 in words is "seven hundred eighty million, four hundred seventy-one thousand, seventy-two".