1428046631 has 32 divisors (see below), whose sum is σ = 1743793920. Its totient is φ = 1152576000.

The previous prime is 1428046621. The next prime is 1428046649. The reversal of 1428046631 is 1366408241.

It is a cyclic number.

It is not a de Polignac number, because 1428046631 - 2⁶ = 1428046567 is a prime.

It is a super-2 number, since 2×1428046631² = 4078634360620900322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1428046591 and 1428046600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428046621) 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, 983456 + ... + 984906.

It is an arithmetic number, because the mean of its divisors is an integer number (54493560).

Almost surely, 2^1428046631 is an apocalyptic number.

1428046631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1428046631 is a deficient number, since it is larger than the sum of its proper divisors (315747289).

1428046631 is a wasteful number, since it uses less digits than its factorization.

1428046631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 1428046631 is about 37789.5042439035. The cubic root of 1428046631 is about 1126.1099513835.

The spelling of 1428046631 in words is "one billion, four hundred twenty-eight million, forty-six thousand, six hundred thirty-one".