1461720 has 64 divisors (see below), whose sum is σ = 4727520. Its totient is φ = 359424.

The previous prime is 1461709. The next prime is 1461731. The reversal of 1461720 is 271641.

It is an interprime number because it is at equal distance from previous prime (1461709) and next prime (1461731).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1092 + ... + 2028.

2^1461720 is an apocalyptic number.

1461720 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 1461720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2363760).

1461720 is an abundant number, since it is smaller than the sum of its proper divisors (3265800).

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

1461720 is a wasteful number, since it uses less digits than its factorization.

1461720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1461720 is about 1209.0161289247. The cubic root of 1461720 is about 113.4892509890.

The spelling of 1461720 in words is "one million, four hundred sixty-one thousand, seven hundred twenty".