1630872 has 24 divisors (see below), whose sum is σ = 4417140. Its totient is φ = 543600.

The previous prime is 1630859. The next prime is 1630891. The reversal of 1630872 is 2780361.

It is a tau number, because it is divible by the number of its divisors (24).

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11254 + ... + 11397.

2^1630872 is an apocalyptic number.

1630872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1630872 is an abundant number, since it is smaller than the sum of its proper divisors (2786268).

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

1630872 is a wasteful number, since it uses less digits than its factorization.

1630872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22663 (or 22656 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1630872 is about 1277.0559893756. The cubic root of 1630872 is about 117.7081747946.

The spelling of 1630872 in words is "one million, six hundred thirty thousand, eight hundred seventy-two".