1954428 has 48 divisors (see below), whose sum is σ = 5322240. Its totient is φ = 546624.

The previous prime is 1954427. The next prime is 1954441. The reversal of 1954428 is 8244591.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954423) 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 15 ways as a sum of consecutive naturals, for example, 4233 + ... + 4671.

It is an arithmetic number, because the mean of its divisors is an integer number (110880).

2^1954428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1954428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2661120).

1954428 is an abundant number, since it is smaller than the sum of its proper divisors (3367812).

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

1954428 is a wasteful number, since it uses less digits than its factorization.

1954428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 504 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 1954428 is about 1398.0085836646. The cubic root of 1954428 is about 125.0277911541.

The spelling of 1954428 in words is "one million, nine hundred fifty-four thousand, four hundred twenty-eight".