7428251 has 8 divisors (see below), whose sum is σ = 7762944. Its totient is φ = 7099560.

The previous prime is 7428227. The next prime is 7428271. The reversal of 7428251 is 1528247.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7428251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7428271) 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, 1130 + ... + 4016.

It is an arithmetic number, because the mean of its divisors is an integer number (970368).

Almost surely, 2^7428251 is an apocalyptic number.

7428251 is a deficient number, since it is larger than the sum of its proper divisors (334693).

7428251 is a wasteful number, since it uses less digits than its factorization.

7428251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3001.

The product of its digits is 4480, while the sum is 29.

The square root of 7428251 is about 2725.4817922709. The cubic root of 7428251 is about 195.1171857539.

The spelling of 7428251 in words is "seven million, four hundred twenty-eight thousand, two hundred fifty-one".