7429428 has 24 divisors (see below), whose sum is σ = 19261760. Its totient is φ = 2476440.

The previous prime is 7429421. The next prime is 7429439. The reversal of 7429428 is 8249247.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 7⁵ + 4 + 2¹³ + 9⁷ + 4² + 2¹⁹ + 8⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 7429392 and 7429401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7429421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34288 + ... + 34503.

Almost surely, 2^7429428 is an apocalyptic number.

It is an amenable number.

7429428 is an abundant number, since it is smaller than the sum of its proper divisors (11832332).

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

7429428 is a wasteful number, since it uses less digits than its factorization.

7429428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68804 (or 68796 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 7429428 is about 2725.6977088445. The cubic root of 7429428 is about 195.1274905932.

The spelling of 7429428 in words is "seven million, four hundred twenty-nine thousand, four hundred twenty-eight".