3728776431 has 8 divisors (see below), whose sum is σ = 4976213760. Its totient is φ = 2483595032.

The previous prime is 3728776423. The next prime is 3728776451. The reversal of 3728776431 is 1346778273.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3728776431 - 2³ = 3728776423 is a prime.

It is a super-2 number, since 2×3728776431² = 27807547344762195522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728776451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560121 + ... + 566738.

It is an arithmetic number, because the mean of its divisors is an integer number (622026720).

Almost surely, 2^3728776431 is an apocalyptic number.

3728776431 is a deficient number, since it is larger than the sum of its proper divisors (1247437329).

3728776431 is a wasteful number, since it uses less digits than its factorization.

3728776431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127965.

The product of its digits is 1185408, while the sum is 48.

The square root of 3728776431 is about 61063.7079696279. The cubic root of 3728776431 is about 1550.6797477795.

The spelling of 3728776431 in words is "three billion, seven hundred twenty-eight million, seven hundred seventy-six thousand, four hundred thirty-one".