721492914 has 32 divisors (see below), whose sum is σ = 1494440640. Its totient is φ = 231940800.

The previous prime is 721492907. The next prime is 721492927. The reversal of 721492914 is 419294127.

It is a super-2 number, since 2×721492914² = 1041104049904422792, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201984 + ... + 205524.

It is an arithmetic number, because the mean of its divisors is an integer number (46701270).

Almost surely, 2^721492914 is an apocalyptic number.

721492914 is an abundant number, since it is smaller than the sum of its proper divisors (772947726).

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

721492914 is a wasteful number, since it uses less digits than its factorization.

721492914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4746.

The product of its digits is 36288, while the sum is 39.

The square root of 721492914 is about 26860.6201343156. The cubic root of 721492914 is about 896.8999986703.

It can be divided in two parts, 7214 and 92914, that added together give a triangular number (100128 = T₄₄₇).

The spelling of 721492914 in words is "seven hundred twenty-one million, four hundred ninety-two thousand, nine hundred fourteen".