2273428 has 12 divisors (see below), whose sum is σ = 4086292. Its totient is φ = 1105920.

The previous prime is 2273399. The next prime is 2273431. The reversal of 2273428 is 8243722.

It can be written as a sum of positive squares in 2 ways, for example, as 1898884 + 374544 = 1378^2 + 612^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 2⁵ + 2¹¹ + 7⁶ + 3⁹ + 4⁶ + 2²¹ + 8⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 2273396 and 2273405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7533 + ... + 7828.

2^2273428 is an apocalyptic number.

It is an amenable number.

2273428 is a deficient number, since it is larger than the sum of its proper divisors (1812864).

2273428 is a wasteful number, since it uses less digits than its factorization.

2273428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15402 (or 15400 counting only the distinct ones).

The product of its digits is 5376, while the sum is 28.

The square root of 2273428 is about 1507.7891099222. The cubic root of 2273428 is about 131.4903056364.

It can be divided in two parts, 2273 and 428, that added together give a triangular number (2701 = T₇₃).

The spelling of 2273428 in words is "two million, two hundred seventy-three thousand, four hundred twenty-eight".