1200901928 has 8 divisors (see below), whose sum is σ = 2251691130. Its totient is φ = 600450960.

The previous prime is 1200901909. The next prime is 1200901939. The reversal of 1200901928 is 8291090021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 638168644 + 562733284 = 25262^2 + 23722^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1200901894 and 1200901903.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75056363 + ... + 75056378.

Almost surely, 2^1200901928 is an apocalyptic number.

It is an amenable number.

1200901928 is a deficient number, since it is larger than the sum of its proper divisors (1050789202).

1200901928 is a wasteful number, since it uses less digits than its factorization.

1200901928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150112747 (or 150112743 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1200901928 is about 34654.0319154929. The cubic root of 1200901928 is about 1062.9247362644.

Adding to 1200901928 its reverse (8291090021), we get a palindrome (9491991949).

The spelling of 1200901928 in words is "one billion, two hundred million, nine hundred one thousand, nine hundred twenty-eight".