1973428 has 12 divisors (see below), whose sum is σ = 3656772. Its totient is φ = 928640.

The previous prime is 1973417. The next prime is 1973431. The reversal of 1973428 is 8243791.

It can be written as a sum of positive squares in 2 ways, for example, as 1790244 + 183184 = 1338^2 + 428^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 1973393 and 1973402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14443 + ... + 14578.

It is an arithmetic number, because the mean of its divisors is an integer number (304731).

2^1973428 is an apocalyptic number.

It is an amenable number.

1973428 is a deficient number, since it is larger than the sum of its proper divisors (1683344).

1973428 is a wasteful number, since it uses less digits than its factorization.

1973428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29042 (or 29040 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 1973428 is about 1404.7875284184. The cubic root of 1973428 is about 125.4316384570.

It can be divided in two parts, 1973 and 428, that added together give a 4-th power (2401 = 7⁴).

The spelling of 1973428 in words is "one million, nine hundred seventy-three thousand, four hundred twenty-eight".