721027450 has 96 divisors (see below), whose sum is σ = 1626895872. Its totient is φ = 234144000.

The previous prime is 721027429. The next prime is 721027451. The reversal of 721027450 is 54720127.

721027450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (721027451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 220024 + ... + 223276.

It is an arithmetic number, because the mean of its divisors is an integer number (16946832).

Almost surely, 2^721027450 is an apocalyptic number.

721027450 is an abundant number, since it is smaller than the sum of its proper divisors (905868422).

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

721027450 is a wasteful number, since it uses less digits than its factorization.

721027450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320 (or 3315 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 721027450 is about 26851.9543050408. The cubic root of 721027450 is about 896.7070817977.

Adding to 721027450 its reverse (54720127), we get a palindrome (775747577).

The spelling of 721027450 in words is "seven hundred twenty-one million, twenty-seven thousand, four hundred fifty".