1611420 has 48 divisors (see below), whose sum is σ = 4572288. Its totient is φ = 424000.

The previous prime is 1611419. The next prime is 1611433. The reversal of 1611420 is 241161.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1611420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6295 + ... + 6545.

It is an arithmetic number, because the mean of its divisors is an integer number (95256).

2^1611420 is an apocalyptic number.

1611420 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 1611420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2286144).

1611420 is an abundant number, since it is smaller than the sum of its proper divisors (2960868).

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

1611420 is a wasteful number, since it uses less digits than its factorization.

1611420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1611420 is about 1269.4171891069. The cubic root of 1611420 is about 117.2383191143.

Adding to 1611420 its reverse (241161), we get a palindrome (1852581).

The spelling of 1611420 in words is "one million, six hundred eleven thousand, four hundred twenty".