1715420 has 24 divisors (see below), whose sum is σ = 4117344. Its totient is φ = 588096.

The previous prime is 1715411. The next prime is 1715429. The reversal of 1715420 is 245171.

It is an interprime number because it is at equal distance from previous prime (1715411) and next prime (1715429).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1715392 and 1715401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1715429) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5987 + ... + 6266.

It is an arithmetic number, because the mean of its divisors is an integer number (171556).

2^1715420 is an apocalyptic number.

1715420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1715420 is an abundant number, since it is smaller than the sum of its proper divisors (2401924).

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

1715420 is a wasteful number, since it uses less digits than its factorization.

1715420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12269 (or 12267 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 1715420 is about 1309.7404322995. The cubic root of 1715420 is about 119.7080867609.

The spelling of 1715420 in words is "one million, seven hundred fifteen thousand, four hundred twenty".