1601428628 has 24 divisors (see below), whose sum is σ = 3063078144. Its totient is φ = 729302400.

The previous prime is 1601428601. The next prime is 1601428637. The reversal of 1601428628 is 8268241061.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1601428591 and 1601428600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377738 + ... + 381953.

It is an arithmetic number, because the mean of its divisors is an integer number (127628256).

Almost surely, 2^1601428628 is an apocalyptic number.

It is an amenable number.

1601428628 is a deficient number, since it is larger than the sum of its proper divisors (1461649516).

1601428628 is a wasteful number, since it uses less digits than its factorization.

1601428628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759743 (or 759741 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 1601428628 is about 40017.8538654936. The cubic root of 1601428628 is about 1169.9551028623.

Adding to 1601428628 its reverse (8268241061), we get a palindrome (9869669689).

The spelling of 1601428628 in words is "one billion, six hundred one million, four hundred twenty-eight thousand, six hundred twenty-eight".