1628130 has 32 divisors (see below), whose sum is σ = 4466304. Its totient is φ = 372096.

The previous prime is 1628117. The next prime is 1628131. The reversal of 1628130 is 318261.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1628097 and 1628106.

It is not an unprimeable number, because it can be changed into a prime (1628131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3667 + ... + 4086.

It is an arithmetic number, because the mean of its divisors is an integer number (139572).

2^1628130 is an apocalyptic number.

1628130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1628130 is an abundant number, since it is smaller than the sum of its proper divisors (2838174).

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

1628130 is a wasteful number, since it uses less digits than its factorization.

1628130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7770.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1628130 is about 1275.9819747943. The cubic root of 1628130 is about 117.6421698459.

The spelling of 1628130 in words is "one million, six hundred twenty-eight thousand, one hundred thirty".