Search a number
-
+
28761414 = 2311435779
BaseRepresentation
bin110110110110…
…1110101000110
32000010020020120
41231231311012
524330331124
62504242410
7466316343
oct155556506
960106216
1028761414
1115264970
129770406
135c602b6
143b697ca
1527d1d79
hex1b6dd46

28761414 has 16 divisors (see below), whose sum is σ = 62752320. Its totient is φ = 8715560.

The previous prime is 28761413. The next prime is 28761427. The reversal of 28761414 is 41416782.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28761413) 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, 217824 + ... + 217955.

It is an arithmetic number, because the mean of its divisors is an integer number (3922020).

Almost surely, 228761414 is an apocalyptic number.

28761414 is an abundant number, since it is smaller than the sum of its proper divisors (33990906).

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

28761414 is a wasteful number, since it uses less digits than its factorization.

28761414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435795.

The product of its digits is 10752, while the sum is 33.

The square root of 28761414 is about 5362.9669027508. The cubic root of 28761414 is about 306.3868191104.

The spelling of 28761414 in words is "twenty-eight million, seven hundred sixty-one thousand, four hundred fourteen".

Divisors: 1 2 3 6 11 22 33 66 435779 871558 1307337 2614674 4793569 9587138 14380707 28761414