2154628 has 18 divisors (see below), whose sum is σ = 4386606. Its totient is φ = 923328.

The previous prime is 2154611. The next prime is 2154629. The reversal of 2154628 is 8264512.

It can be written as a sum of positive squares in only one way, i.e., 1517824 + 636804 = 1232^2 + 798^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a d-powerful number, because it can be written as 2¹³ + 1 + 5³ + 4⁷ + 6 + 2²¹ + 8⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 2154596 and 2154605.

It is not an unprimeable number, because it can be changed into a prime (2154629) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5301 + ... + 5692.

2^2154628 is an apocalyptic number.

2154628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2154628 is an abundant number, since it is smaller than the sum of its proper divisors (2231978).

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

2154628 is a wasteful number, since it uses less digits than its factorization.

2154628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11011 (or 11002 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 2154628 is about 1467.8651164191. The cubic root of 2154628 is about 129.1588292620.

The spelling of 2154628 in words is "two million, one hundred fifty-four thousand, six hundred twenty-eight".