724644342 has 24 divisors (see below), whose sum is σ = 1606577544. Its totient is φ = 235930464.

The previous prime is 724644341. The next prime is 724644353. The reversal of 724644342 is 243446427.

724644342 is a `hidden beast` number, since 7 + 2 + 4 + 644 + 3 + 4 + 2 = 666.

It is a super-2 number, since 2×724644342² = 1050218844785225928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 724644297 and 724644306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724644341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 467343 + ... + 468890.

It is an arithmetic number, because the mean of its divisors is an integer number (66940731).

Almost surely, 2^724644342 is an apocalyptic number.

724644342 is an abundant number, since it is smaller than the sum of its proper divisors (881933202).

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

724644342 is a wasteful number, since it uses less digits than its factorization.

724644342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936284 (or 936281 counting only the distinct ones).

The product of its digits is 129024, while the sum is 36.

The square root of 724644342 is about 26919.2188222467. The cubic root of 724644342 is about 898.2039663804.

The spelling of 724644342 in words is "seven hundred twenty-four million, six hundred forty-four thousand, three hundred forty-two".