1628630 has 32 divisors (see below), whose sum is σ = 3132864. Its totient is φ = 608256.

The previous prime is 1628621. The next prime is 1628633. The reversal of 1628630 is 368261.

It is a self number, because there is not a number n which added to its sum of digits gives 1628630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628633) 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, 16742 + ... + 16838.

It is an arithmetic number, because the mean of its divisors is an integer number (97902).

2^1628630 is an apocalyptic number.

1628630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1628630 is a deficient number, since it is larger than the sum of its proper divisors (1504234).

1628630 is a wasteful number, since it uses less digits than its factorization.

1628630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1628630 is about 1276.1778872869. The cubic root of 1628630 is about 117.6542112808.

The spelling of 1628630 in words is "one million, six hundred twenty-eight thousand, six hundred thirty".