1550197928 has 16 divisors (see below), whose sum is σ = 2914296000. Its totient is φ = 773052336.

The previous prime is 1550197927. The next prime is 1550197931. The reversal of 1550197928 is 8297910551.

It is a happy number.

It is a super-2 number, since 2×1550197928² = 4806227231950986368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1550197927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252608 + ... + 258671.

It is an arithmetic number, because the mean of its divisors is an integer number (182143500).

Almost surely, 2^1550197928 is an apocalyptic number.

It is an amenable number.

1550197928 is a deficient number, since it is larger than the sum of its proper divisors (1364098072).

1550197928 is a wasteful number, since it uses less digits than its factorization.

1550197928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511664 (or 511660 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 47.

The square root of 1550197928 is about 39372.5529779312. The cubic root of 1550197928 is about 1157.3437855945.

The spelling of 1550197928 in words is "one billion, five hundred fifty million, one hundred ninety-seven thousand, nine hundred twenty-eight".