7228404 has 18 divisors (see below), whose sum is σ = 18271890. Its totient is φ = 2409456.

The previous prime is 7228399. The next prime is 7228411. The reversal of 7228404 is 4048227.

It can be written as a sum of positive squares in only one way, i.e., 6502500 + 725904 = 2550^2 + 852^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100359 + ... + 100430.

It is an arithmetic number, because the mean of its divisors is an integer number (1015105).

Almost surely, 2^7228404 is an apocalyptic number.

It is an amenable number.

7228404 is an abundant number, since it is smaller than the sum of its proper divisors (11043486).

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

7228404 is a wasteful number, since it uses less digits than its factorization.

7228404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200799 (or 200794 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 7228404 is about 2688.5691361763. The cubic root of 7228404 is about 193.3514674495.

The spelling of 7228404 in words is "seven million, two hundred twenty-eight thousand, four hundred four".