721101416 has 32 divisors (see below), whose sum is σ = 1595066880. Its totient is φ = 299073600.

The previous prime is 721101413. The next prime is 721101431. The reversal of 721101416 is 614101127.

It is a happy number.

721101416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 721101391 and 721101400.

It is not an unprimeable number, because it can be changed into a prime (721101413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205955 + ... + 209426.

It is an arithmetic number, because the mean of its divisors is an integer number (49845840).

Almost surely, 2^721101416 is an apocalyptic number.

It is an amenable number.

721101416 is an abundant number, since it is smaller than the sum of its proper divisors (873965464).

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

721101416 is a wasteful number, since it uses less digits than its factorization.

721101416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415425 (or 415421 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 721101416 is about 26853.3315623965. The cubic root of 721101416 is about 896.7377433988.

The spelling of 721101416 in words is "seven hundred twenty-one million, one hundred one thousand, four hundred sixteen".