1972831228 has 36 divisors (see below), whose sum is σ = 3559218600. Its totient is φ = 956775456.

The previous prime is 1972831219. The next prime is 1972831241. The reversal of 1972831228 is 8221382791.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1160323 + ... + 1162021.

Almost surely, 2^1972831228 is an apocalyptic number.

It is an amenable number.

1972831228 is a deficient number, since it is larger than the sum of its proper divisors (1586387372).

1972831228 is a wasteful number, since it uses less digits than its factorization.

1972831228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946 (or 1901 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 1972831228 is about 44416.5647928788. The cubic root of 1972831228 is about 1254.1899351692.

The spelling of 1972831228 in words is "one billion, nine hundred seventy-two million, eight hundred thirty-one thousand, two hundred twenty-eight".