1628120 has 64 divisors (see below), whose sum is σ = 4112640. Its totient is φ = 576000.

The previous prime is 1628117. The next prime is 1628131. The reversal of 1628120 is 218261.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1628092 and 1628101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16070 + ... + 16170.

It is an arithmetic number, because the mean of its divisors is an integer number (64260).

2^1628120 is an apocalyptic number.

1628120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1628120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2056320).

1628120 is an abundant number, since it is smaller than the sum of its proper divisors (2484520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1628120 is a wasteful number, since it uses less digits than its factorization.

1628120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1628120 is about 1275.9780562376. The cubic root of 1628120 is about 117.6419289920.

1628120 divided by its sum of digits (20) gives a triangular number (81406 = T₄₀₃).

The spelling of 1628120 in words is "one million, six hundred twenty-eight thousand, one hundred twenty".