721482078 has 16 divisors (see below), whose sum is σ = 1505702016. Its totient is φ = 230037720.

The previous prime is 721482067. The next prime is 721482089. The reversal of 721482078 is 870284127.

It is an interprime number because it is at equal distance from previous prime (721482067) and next prime (721482089).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2613928 + ... + 2614203.

It is an arithmetic number, because the mean of its divisors is an integer number (94106376).

Almost surely, 2^721482078 is an apocalyptic number.

721482078 is an abundant number, since it is smaller than the sum of its proper divisors (784219938).

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

721482078 is a wasteful number, since it uses less digits than its factorization.

721482078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5228159.

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 721482078 is about 26860.4184256314. The cubic root of 721482078 is about 896.8955085097.

The spelling of 721482078 in words is "seven hundred twenty-one million, four hundred eighty-two thousand, seventy-eight".