Search a number
-
+
28703151 = 323189239
BaseRepresentation
bin110110101111…
…1100110101111
32000000021022200
41231133212233
524322000101
62503112543
7465654441
oct155374657
960007280
1028703151
1115225114
129742753
135c3c919
143b52491
1527be986
hex1b5f9af

28703151 has 6 divisors (see below), whose sum is σ = 41460120. Its totient is φ = 19135428.

The previous prime is 28703141. The next prime is 28703177. The reversal of 28703151 is 15130782.

It is not a de Polignac number, because 28703151 - 214 = 28686767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28703111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1594611 + ... + 1594628.

It is an arithmetic number, because the mean of its divisors is an integer number (6910020).

Almost surely, 228703151 is an apocalyptic number.

28703151 is a deficient number, since it is larger than the sum of its proper divisors (12756969).

28703151 is a wasteful number, since it uses less digits than its factorization.

28703151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189245 (or 3189242 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 28703151 is about 5357.5321744251. The cubic root of 28703151 is about 306.1797930971.

The spelling of 28703151 in words is "twenty-eight million, seven hundred three thousand, one hundred fifty-one".

Divisors: 1 3 9 3189239 9567717 28703151