1972388 has 24 divisors (see below), whose sum is σ = 3931200. Its totient is φ = 857120.

The previous prime is 1972381. The next prime is 1972417. The reversal of 1972388 is 8832791.

It is not an unprimeable number, because it can be changed into a prime (1972381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38 + ... + 1986.

It is an arithmetic number, because the mean of its divisors is an integer number (163800).

2^1972388 is an apocalyptic number.

It is an amenable number.

1972388 is a deficient number, since it is larger than the sum of its proper divisors (1958812).

1972388 is a wasteful number, since it uses less digits than its factorization.

1972388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987 (or 1985 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 1972388 is about 1404.4173168969. The cubic root of 1972388 is about 125.4096003544.

The spelling of 1972388 in words is "one million, nine hundred seventy-two thousand, three hundred eighty-eight".