7533428 has 24 divisors (see below), whose sum is σ = 15419712. Its totient is φ = 3153024.

The previous prime is 7533391. The next prime is 7533433. The reversal of 7533428 is 8243357.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7533394 and 7533403.

It is a congruent number.

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, 1925 + ... + 4332.

It is an arithmetic number, because the mean of its divisors is an integer number (642488).

Almost surely, 2^7533428 is an apocalyptic number.

It is an amenable number.

7533428 is an abundant number, since it is smaller than the sum of its proper divisors (7886284).

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

7533428 is a wasteful number, since it uses less digits than its factorization.

7533428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6311 (or 6309 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 7533428 is about 2744.7090920533. The cubic root of 7533428 is about 196.0337648341.

The spelling of 7533428 in words is "seven million, five hundred thirty-three thousand, four hundred twenty-eight".