742394688 has 112 divisors (see below), whose sum is σ = 2290876800. Its totient is φ = 212093952.

The previous prime is 742394599. The next prime is 742394689. The reversal of 742394688 is 886493247.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×742394688² = 1102299745541234688, 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 742394688.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742394689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60220 + ... + 71492.

Almost surely, 2^742394688 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 742394688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1145438400).

742394688 is an abundant number, since it is smaller than the sum of its proper divisors (1548482112).

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

742394688 is a wasteful number, since it uses less digits than its factorization.

742394688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11309 (or 11285 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The square root of 742394688 is about 27246.9207067514. The cubic root of 742394688 is about 905.4787971411.

The spelling of 742394688 in words is "seven hundred forty-two million, three hundred ninety-four thousand, six hundred eighty-eight".