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28950454 = 2138912511
BaseRepresentation
bin110111001101…
…1111110110110
32000110211120001
41232123332312
524402403304
62512301514
7501034441
oct156337666
960424501
1028950454
11153839a5
12984189a
135cc8360
143bb8658
15281cda4
hex1b9bfb6

28950454 has 16 divisors (see below), whose sum is σ = 47295360. Its totient is φ = 13210560.

The previous prime is 28950437. The next prime is 28950461. The reversal of 28950454 is 45405982.

It is a super-2 number, since 2×289504542 = 1676257573612232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3942 + ... + 8569.

It is an arithmetic number, because the mean of its divisors is an integer number (2955960).

Almost surely, 228950454 is an apocalyptic number.

28950454 is a deficient number, since it is larger than the sum of its proper divisors (18344906).

28950454 is a wasteful number, since it uses less digits than its factorization.

28950454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12615.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 28950454 is about 5380.5626099879. The cubic root of 28950454 is about 307.0566161539.

The spelling of 28950454 in words is "twenty-eight million, nine hundred fifty thousand, four hundred fifty-four".

Divisors: 1 2 13 26 89 178 1157 2314 12511 25022 162643 325286 1113479 2226958 14475227 28950454