7261228 has 24 divisors (see below), whose sum is σ = 13759200. Its totient is φ = 3333120.

The previous prime is 7261207. The next prime is 7261231. The reversal of 7261228 is 8221627.

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 junction number, because it is equal to n+sod(n) for n = 7261196 and 7261205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15948 + ... + 16396.

It is an arithmetic number, because the mean of its divisors is an integer number (573300).

Almost surely, 2^7261228 is an apocalyptic number.

It is an amenable number.

7261228 is a deficient number, since it is larger than the sum of its proper divisors (6497972).

7261228 is a wasteful number, since it uses less digits than its factorization.

7261228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 775 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 7261228 is about 2694.6665841992. Note that the first 3 decimals coincide. The cubic root of 7261228 is about 193.6436936078.

It can be divided in two parts, 72612 and 28, that multiplied together give a triangular number (2033136 = T₂₀₁₆).

The spelling of 7261228 in words is "seven million, two hundred sixty-one thousand, two hundred twenty-eight".