761728394 has 32 divisors (see below), whose sum is σ = 1325859840. Its totient is φ = 321475968.

The previous prime is 761728393. The next prime is 761728403. The reversal of 761728394 is 493827167.

761728394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×761728394³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (761728391) 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, 344039 + ... + 346245.

It is an arithmetic number, because the mean of its divisors is an integer number (41433120).

Almost surely, 2^761728394 is an apocalyptic number.

761728394 is a deficient number, since it is larger than the sum of its proper divisors (564131446).

761728394 is a wasteful number, since it uses less digits than its factorization.

761728394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582.

The product of its digits is 508032, while the sum is 47.

The square root of 761728394 is about 27599.4274215970. The cubic root of 761728394 is about 913.2718009883.

The spelling of 761728394 in words is "seven hundred sixty-one million, seven hundred twenty-eight thousand, three hundred ninety-four".