2121480 has 96 divisors (see below), whose sum is σ = 7076160. Its totient is φ = 551040.

The previous prime is 2121479. The next prime is 2121503. The reversal of 2121480 is 841212.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25519 + ... + 25601.

It is an arithmetic number, because the mean of its divisors is an integer number (73710).

2^2121480 is an apocalyptic number.

2121480 is a gapful number since it is divisible by the number (20) 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 2121480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3538080).

2121480 is an abundant number, since it is smaller than the sum of its proper divisors (4954680).

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

2121480 is a wasteful number, since it uses less digits than its factorization.

2121480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 2121480 is about 1456.5301232724. The cubic root of 2121480 is about 128.4930527617.

Adding to 2121480 its reverse (841212), we get a palindrome (2962692).

It can be divided in two parts, 2121 and 480, that added together give a square (2601 = 51²).

The spelling of 2121480 in words is "two million, one hundred twenty-one thousand, four hundred eighty".