742706808 has 128 divisors (see below), whose sum is σ = 2021760000. Its totient is φ = 226616832.

The previous prime is 742706801. The next prime is 742706813. The reversal of 742706808 is 808607247.

It is a super-2 number, since 2×742706808² = 1103226805299097728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 742706808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742706801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1909078 + ... + 1909466.

It is an arithmetic number, because the mean of its divisors is an integer number (15795000).

Almost surely, 2^742706808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 742706808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1010880000).

742706808 is an abundant number, since it is smaller than the sum of its proper divisors (1279053192).

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

742706808 is a wasteful number, since it uses less digits than its factorization.

742706808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 742706808 is about 27252.6477245790. The cubic root of 742706808 is about 905.6056741467.

The spelling of 742706808 in words is "seven hundred forty-two million, seven hundred six thousand, eight hundred eight".