2051430 has 64 divisors (see below), whose sum is σ = 5356800. Its totient is φ = 501120.

The previous prime is 2051429. The next prime is 2051437. The reversal of 2051430 is 341502.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33600 + ... + 33660.

It is an arithmetic number, because the mean of its divisors is an integer number (83700).

2^2051430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2051430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2678400).

2051430 is an abundant number, since it is smaller than the sum of its proper divisors (3305370).

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

2051430 is a wasteful number, since it uses less digits than its factorization.

2051430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2051430 is about 1432.2813969329. The cubic root of 2051430 is about 127.0629402614.

Adding to 2051430 its reverse (341502), we get a palindrome (2392932).

The spelling of 2051430 in words is "two million, fifty-one thousand, four hundred thirty".