Search a number
-
+
7428297 = 3195
BaseRepresentation
bin11100010101100011001001
3111222101201010
4130111203021
53400201142
6423114133
7120065562
oct34254311
914871633
107428297
114213a98
1225a2949
131701156
14db5169
159bae9c
hex7158c9

7428297 has 12 divisors (see below), whose sum is σ = 10454640. Its totient is φ = 4691556.

The previous prime is 7428283. The next prime is 7428301. The reversal of 7428297 is 7928247.

It is not a de Polignac number, because 7428297 - 212 = 7424201 is a prime.

Its product of digits (56448) is a multiple of the sum of its prime factors (98).

It is not an unprimeable number, because it can be changed into a prime (7428217) 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 11 ways as a sum of consecutive naturals, for example, 390954 + ... + 390972.

It is an arithmetic number, because the mean of its divisors is an integer number (871220).

Almost surely, 27428297 is an apocalyptic number.

It is an amenable number.

7428297 is a deficient number, since it is larger than the sum of its proper divisors (3026343).

7428297 is an frugal number, since it uses more digits than its factorization.

7428297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 22 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 7428297 is about 2725.4902311327. The cubic root of 7428297 is about 195.1175885123.

The spelling of 7428297 in words is "seven million, four hundred twenty-eight thousand, two hundred ninety-seven".

Divisors: 1 3 19 57 361 1083 6859 20577 130321 390963 2476099 7428297