1920628 has 6 divisors (see below), whose sum is σ = 3361106. Its totient is φ = 960312.

The previous prime is 1920617. The next prime is 1920631. The reversal of 1920628 is 8260291.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1710864 + 209764 = 1308^2 + 458^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1920596 and 1920605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240075 + ... + 240082.

2^1920628 is an apocalyptic number.

It is an amenable number.

1920628 is a deficient number, since it is larger than the sum of its proper divisors (1440478).

1920628 is a wasteful number, since it uses less digits than its factorization.

1920628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480161 (or 480159 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1920628 is about 1385.8672375087. The cubic root of 1920628 is about 124.3028497472.

The spelling of 1920628 in words is "one million, nine hundred twenty thousand, six hundred twenty-eight".