1631260 has 12 divisors (see below), whose sum is σ = 3425688. Its totient is φ = 652496.

The previous prime is 1631257. The next prime is 1631261. The reversal of 1631260 is 621361.

It is a super-2 number, since 2×1631260² = 5322018375200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40762 + ... + 40801.

It is an arithmetic number, because the mean of its divisors is an integer number (285474).

2^1631260 is an apocalyptic number.

1631260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1631260 is an abundant number, since it is smaller than the sum of its proper divisors (1794428).

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

1631260 is a wasteful number, since it uses less digits than its factorization.

1631260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81572 (or 81570 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1631260 is about 1277.2078922399. The cubic root of 1631260 is about 117.7175086869.

It can be divided in two parts, 1631 and 260, that added together give a triangular number (1891 = T₆₁).

The spelling of 1631260 in words is "one million, six hundred thirty-one thousand, two hundred sixty".