1351620 has 48 divisors (see below), whose sum is σ = 4206720. Its totient is φ = 360288.

The previous prime is 1351589. The next prime is 1351621. The reversal of 1351620 is 261531.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1351593 and 1351602.

It is not an unprimeable number, because it can be changed into a prime (1351621) 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 15 ways as a sum of consecutive naturals, for example, 712 + ... + 1791.

It is an arithmetic number, because the mean of its divisors is an integer number (87640).

2^1351620 is an apocalyptic number.

1351620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1351620 is an abundant number, since it is smaller than the sum of its proper divisors (2855100).

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

1351620 is a wasteful number, since it uses less digits than its factorization.

1351620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521 (or 2513 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1351620 is about 1162.5919318488. The cubic root of 1351620 is about 110.5651356656.

The spelling of 1351620 in words is "one million, three hundred fifty-one thousand, six hundred twenty".