7428994 has 8 divisors (see below), whose sum is σ = 11224080. Its totient is φ = 3687636.

The previous prime is 7428937. The next prime is 7428997. The reversal of 7428994 is 4998247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 7428994.

It is not an unprimeable number, because it can be changed into a prime (7428997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13084 + ... + 13639.

It is an arithmetic number, because the mean of its divisors is an integer number (1403010).

Almost surely, 2^7428994 is an apocalyptic number.

7428994 is a deficient number, since it is larger than the sum of its proper divisors (3795086).

7428994 is a wasteful number, since it uses less digits than its factorization.

7428994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26864.

The product of its digits is 145152, while the sum is 43.

The square root of 7428994 is about 2725.6180950383. The cubic root of 7428994 is about 195.1236909746.

It can be divided in two parts, 74 and 28994, that multiplied together give a triangular number (2145556 = T₂₀₇₁).

The spelling of 7428994 in words is "seven million, four hundred twenty-eight thousand, nine hundred ninety-four".