1951428 has 24 divisors (see below), whose sum is σ = 4590432. Its totient is φ = 645184.

The previous prime is 1951403. The next prime is 1951429. The reversal of 1951428 is 8241591.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1951395 and 1951404.

It is not an unprimeable number, because it can be changed into a prime (1951429) 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, 1051 + ... + 2237.

It is an arithmetic number, because the mean of its divisors is an integer number (191268).

2^1951428 is an apocalyptic number.

It is an amenable number.

1951428 is an abundant number, since it is smaller than the sum of its proper divisors (2639004).

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

1951428 is a wasteful number, since it uses less digits than its factorization.

1951428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331 (or 1329 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 1951428 is about 1396.9352168229. The cubic root of 1951428 is about 124.9637868432.

The spelling of 1951428 in words is "one million, nine hundred fifty-one thousand, four hundred twenty-eight".