1720742814 has 24 divisors (see below), whose sum is σ = 4260887280. Its totient is φ = 491640768.

The previous prime is 1720742813. The next prime is 1720742819. The reversal of 1720742814 is 4182470271.

1720742814 is a `hidden beast` number, since 17 + 207 + 428 + 14 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720742813) 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, 6828219 + ... + 6828470.

It is an arithmetic number, because the mean of its divisors is an integer number (177536970).

Almost surely, 2^1720742814 is an apocalyptic number.

1720742814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1720742814 is an abundant number, since it is smaller than the sum of its proper divisors (2540144466).

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

1720742814 is a wasteful number, since it uses less digits than its factorization.

1720742814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13656704 (or 13656701 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 1720742814 is about 41481.8371579659. The cubic root of 1720742814 is about 1198.3177385992.

The spelling of 1720742814 in words is "one billion, seven hundred twenty million, seven hundred forty-two thousand, eight hundred fourteen".